Unable to add App ID because the '10' App ID limit in '7' days has been exceeded [duplicate]
Easiest workaround I've found: find a bundle id that you already used.
Just create new projects with whatever name you want, and then change the bundle id to be the same in each project.
This works fine if you don't actually need to have multiple apps side by side on your phone, but you need to create lots of apps to test different scenarios.