Closing, please see how to report bugs, specifically:
e cannot help with large projects... these can take hours and hours to investigate, often with the conclusion it was simply a mistake in the events... re-create the bug in a minimal new project.
The most likely cause is due to a mistake in your events you are playing some audio every tick (60 times a second) which will very quickly jam up the audio engine. Desktop computers have more memory than mobile ones, so it might just be lasting longer than the iPad before it jams up (or it has enough memory to actually play that much audio). Posting a new project made from scratch is the quickest way to prove it's a C2 issue and not a mistake in your events.
Please note always to include clear steps on how to reproduce the issue as well, because I am not familiar with how your project works or what I'm supposed to do in it.