Unable to open project on premier rush

hi, I have been working on a film on premier rush on my phone for the last few weeks and everything has been working perfectly until today, it started throwing me off the app every few minutes and then after about an hour of doing that it’s now telling me ‘can’t open project’ this is super annoying because the film is due in today for university and I only had a few more things to add, could anybody help me please?