I have been working on my app on the computer and now when I try to go into the thunkable live app on my phone it is crashing, I have tries this on two different phones and it is doing the same thing. It won’t even get to my first screen, the app just shuts down. Is there something I can do to fix it?
I had a similar issue a while back. 3 things to try:
- Make sure there are no errors/warnings in your blocks.
- Remove the last thing you updated.
- Try duplicating the app from the project home page and opening up the new copy.
Other than that you are at the mercy of the Thunkable Developers.
If all that doesn’t work (and it did not for me). You may indeed have to start over. 
I hope that helps - happy thunking
If you give me a link to your project, then I will try to fix it.