Yes, quite a few unanswered posts going back nearly 10 years by the looks of things.
The audio routing issue has been known about for a long time yet Algoriddims website and google play page never gets updated with better information.
I regularly see people posting on here wondering why their headphones don’t work. They’ve obviously purchased the app and hardware and was hoping to use it in conjunction with a Samsung tablet only to find out that it doesn’t work.
For now, I think its probably best to go for, what I would think, should be the easiest issue to fix and that is “set grid start”
Thank you for taking the time to respond, as an android user, it’s quite refreshing for someone to enquire as to what can be done.