I have a AHK script that uses hotkeys (not used by QAP), and it works fine alongside QAP.
Possible troubleshooting tips:
1. Download HotKeysList from NirSoft
(It requires no installation and no admin rights).
https://www.nirsoft.net/utils/hot_keys_list.html
2. Start HotKeysList (do not start your AHK script)
3. Check if the hotkey combo you use with OBS is in the list
If it is, quit QAP and refresh HotKeysList.
It it disappears then QAP grabs that hotkey, and you have a conflict.
Regards,
joeNOR