The BBC Microbit V2.21 I bought from DF Robots won't accept Makecode programmes.

I added the Maqueen extensions, then, when attempting to download the code created using the editor at https://makecode.microbit.org/#editor I get the message “hex file is not available, please connect to internet and try again”.

DF Robot suggested looking at Github at the URL

https://github.com/DFRobot/pxt-DFRobot_MaqueenPlus_V20

This doesn't seem to be connected with the issue.

When I compile and download any projects at makecode.microbit.org/#editor WITHOUT references to the Maqueen extensions, everything works OK, so I guess the extensions are the problem. DF Robot say that the code and hardware is compatible with the Windows 11 desktop PC I'm trying to use to develop code.

Can anyone help me to sort this out?