SIM7000E Help

I have followed the steps of the wiki and have had to alter code due to certain parts not being found in the "DFRobot_SIM7000.h" the code is:
#include <Wire.h>
#include <DFRobot_SIM7000.h>

#define PIN_TX 0
#define PIN_RX 1
SoftwareSerial mySerial(PIN_RX,PIN_TX);
DFRobot_SIM7000 sim7000;
static char buff[350];

void setup(){
int signalStrength,dataNum;
Serial.begin(115200);
sim7000.begin(mySerial);
sim7000.turnOFF();
delay(5000);
Serial.println("Turn ON SIM7000......");
if(sim7000.turnON()){ //Turn ON SIM7000
Serial.println("Turn ON !");
}
Serial.println("Set baud rate......");
if(sim7000.setBaudRate(19200)){ //Set baud rate from 115200 to 19200
Serial.println("Set baud rate:19200");
}else{
Serial.println("Faile to set baud rate");
while(1);
}
Serial.println("Check SIM card......");
if(sim7000.checkSIMStatus()){ //Check SIM card
Serial.println("SIM card READY");
}else{
Serial.println("SIM card ERROR");
while(1);
}
delay(500);
Serial.println("Set net mod......");
if(sim7000.setNetMode(NB)){ //Set net mod NB-IOT
Serial.println("Set NB-IOT mode");
}else{
Serial.println("Fail to set mode");
}
Serial.println("Get signal quality......");
delay(500);
signalStrength=sim7000.checkSignalQuality(); //Check signal quality from (0-30)
Serial.print("signalStrength =");
Serial.println(signalStrength);
delay(500);
Serial.println("Attaching service......");
if(sim7000.attacthService()){ //Open the connection
Serial.println("Attach service");
}else{
Serial.println("Fail to Attach service");
while(1);
}
delay(200);
Serial.println("Connecting......");
if(sim7000.openNetwork(TCP,"www.hologram.io",80)){ //Start Up TCP or UDP Connection
Serial.println("Connect OK");
}else{
Serial.println("Fail to connect");
while(1);
}
sim7000.send("HEAD/HTTP/1.1\r\nHost:www.taobao.com\r\nConnection:keep-alive\r\n\r\n"); //Send Data Through TCP or UDP Connection
dataNum=sim7000.recv(buff,350,0); //Receive data
Serial.print("dataNum=");
Serial.println(dataNum);
Serial.println(buff);
delay(500);
if(sim7000.closeNetwork()){ //End the connection
Serial.println("Close connection");
}else{
Serial.println("Fail to close connection");
}
delay(2000);
sim7000.turnOFF(); //Turn OFF SIM7000
}

void loop() {
delay(1000);
}

The errors coming up are:
Arduino: 1.8.9 (Windows 7), Board: "Arduino/Genuino Uno"

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `setup':

D:\data\My Documents\Arduino\sketch_may31a/sketch_may31a.ino:13: undefined reference to `DFRobot_SIMcore::begin(Stream&)'

D:\data\My Documents\Arduino\sketch_may31a/sketch_may31a.ino:14: undefined reference to `DFRobot_SIMcore::turnOFF()'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `turnON':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:232: undefined reference to `DFRobot_SIMcore::setRate(long)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:233: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:234: undefined reference to `DFRobot_SIMcore::turnOFF()'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:236: undefined reference to `DFRobot_SIMcore::setRate(long)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:237: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:238: undefined reference to `DFRobot_SIMcore::turnOFF()'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:248: undefined reference to `DFRobot_SIMcore::setRate(long)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:249: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:251: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:251: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:260: undefined reference to `DFRobot_SIMcore::setRate(long)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:261: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:263: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:263: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `setBaudRate':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:40: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:60: undefined reference to `DFRobot_SIMcore::setRate(long)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `checkSIMStatus':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:71: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:83: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `setNetMode':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:102: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `checkSignalQuality':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:176: undefined reference to `DFRobot_SIMcore::cleanBuffer(char*, int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:177: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:178: undefined reference to `DFRobot_SIMcore::readBuffer(char*, int, unsigned int, unsigned int)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `attacthService':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:129: undefined reference to `DFRobot_SIMcore::cleanBuffer(char*, int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:130: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:132: undefined reference to `DFRobot_SIMcore::readBuffer(char*, int, unsigned int, unsigned int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:141: undefined reference to `DFRobot_SIMcore::cleanBuffer(char*, int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:143: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:155: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:157: undefined reference to `DFRobot_SIMcore::readBuffer(char*, int, unsigned int, unsigned int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:165: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `openNetwork':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:198: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:199: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:200: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:202: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:203: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:217: undefined reference to `DFRobot_SIMcore::cleanBuffer(char*, int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:218: undefined reference to `DFRobot_SIMcore::readBuffer(char*, int, unsigned int, unsigned int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:216: undefined reference to `DFRobot_SIMcore::checkReadable()'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `send':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:292: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:293: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:294: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `recv':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:550: undefined reference to `DFRobot_SIMcore::cleanBuffer(char*, int)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:551: undefined reference to `DFRobot_SIMcore::readBuffer(char*, int, unsigned int, unsigned int)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `closeNetwork':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:601: undefined reference to `DFRobot_SIMcore::check_send_cmd(char const*, char const*)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `send':

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:295: undefined reference to `DFRobot_SIMcore::send_cmd(char const*)'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:297: undefined reference to `DFRobot_SIMcore::checkReadable()'

d:\data\My Documents\Arduino\libraries\DFRobot_SIM7000-master/DFRobot_SIM7000.cpp:298: undefined reference to `DFRobot_SIMcore::readBuffer(char*, int, unsigned int, unsigned int)'

C:\Users\91968\AppData\Local\Temp\ccWXik24.ltrans0.ltrans.o: In function `setup':

D:\data\My Documents\Arduino\sketch_may31a/sketch_may31a.ino:74: undefined reference to `DFRobot_SIMcore::turnOFF()'

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.


If anyone would be able to give some help I would be very grateful