Why does the sound disappear on playback with Premier Rush?

My Premiere Rush crashes a lot especially when I'm editing. I've completely disabled all the syncing between my ipad pro and PC because I'm told by the adobe techs that syncing (especially big files) causes the issues I'm having with Rush. Even then, after unsyncing, Rush still crashes but less than when my videos were synced. A lot of times, after it crashes, I'd get back to it - then run a playback, and the sound disappears. Why? I check the volume, I play something on Youtube, and whatever I can think of and nothing with Rush. However, sometimes, if I come back to it at random time or day, it will suddenly appear again. It's so weird and it's driving me nuts. My videos are taking longer to edit than it should.