Gaps and sync problems

I have spent a whole day editing a voice memo and I'm about to throw my phone at the wall idk why there is not a feature to just leave no gaps in the project but I have a bigger issue idk if this account is on the same one as the one that is on my computer both are synced but that's the point IF I CANT GET TO IT. Sorry if I misspelled I'm a little pissed off. How do you see what email each account is linked to??? Or is that not a feature as well.