Thank you for your feedback! Honestly, I have no clue on why it's not working on win 11 and even worst I have no access to win11. Any way I can suggest a few things:
1- Extract from rar both files and make sure to have them on the same folder
2- Try to execute it like an admin(if this option is still avaible)
3- Try changing the execution mode -> left click on the stm.exe> properties>compatibility>execution mode>win10.
Please let me know if anyone of those worked :)
EndritDev.