When I create a new project on Scrivener iOS, it crashes after I select where I want to save it. It saves the project but when I open the app after the crash and try to open the project, it crashes again.
I thought it was something I did wrong when it happened the first time and I was in a rush so I just opened my notebook and created the project from there to then open on iOS and it worked.
Have you tried the advice, for crash on project load symptoms, given in the knowledge base?
Even that aside, the reset functions it points the way to are a good first thing to try when facing a systematic crash. I would go in the order of Dropbox cache (if applicable), custom fonts and lastly default formatting. Presets could maybe be involved, but most people will not have actually customised those since that was only something that could be done with the old Mac version from years ago, before styles were introduced.