Problems with Cubasis 2.1 on ipad

I use Allen Heath QU 16 mixer with cubasis 2.1 on my iPad Pro to play backing tracks (5) live with my band. Everything goes ok except that when we return from break, I have to reboot everything to get multi tracks to play again. I’m not sure what would cause this since it works so well until it is left un attended. If anyone else having this problem.

Is the iPad going to sleep? You can set it not to.

You could try playing a silent backing track, long enough to cover your break.

Well it doesn’t go into sleep mode while the program is running or open. Should I just disengage sleep mode altogether…