peter it’s probably a setting but for the life of me I can’t find the damn thing , yesterday I purchased another iPad 9th generation 256gb WITH A HEADPHONE SOCKET and made a carbon copy of my iPad Pro 10.5 as a backup, it also does not control ST3 master volume with the mechanical buttons , I know this worked before on my iPad Pro and I haven’t done any changes apart from updates on both to 17.1.1 running ST3 3.8.5 (8894).
HELP!!!
Just to add, the side buttons actually work on YouTube they just don’t work with ST3 anymore.
Further report both ipads the master volume in settings does not funtion , i can move the fader but no audio change occurs, it looks as though i have a corrupted software strangely on both ipads i will give it one more try by creating a full backup and reinstalling ST3 and see what happens.
ST2 actually works fine so it must be ST3 has gone corrupt.