I added a couple of Bubble templates to test out the best starting point, namely Canvas and OpenBase. After installing the OpenBase template, when I tried to create a new app, using this template but the template dropdown was empty. I went so far as entirely deleting and recreating my Bubble account, reinstalled the templates and am still experiencing the issue
I’ve just checked and I’m experiencing the exact same thing - no templates available when creating a new app.
It was fine yesterday, so must be a bug or temporary glitch. I can’t see any issues on the Bubble Status page, so maybe try again a bit later on and if it’s still the same contact support or submit a bug report.