Ok so it seems like it's working now, so it's entirely possible it was just something weird with my setup (GrapheneOS with vanadium)

This time I also just set the bunker to fully trusted so I didn't need to rely on amber prompting me for any further permissions.

I'll have to keep playing around with this now that that issue is out of the way! Thanks for the help and keep up the good work! ദ്ദി(˵ •̀ ᴗ - ˵ ) ✧