I am having the same problem. Is there any way to reset everything and start from scratch?

The solution above doesn't work for me because I don't have any integrations listed under Users & Access -> Xcode Cloud, I can only see the setup-your-first-workflow screen. So I am still being redirected to step 2 of the onboarding when I try to setup the first workflow from Xcode. I really would like to give Xcode Cloud a try but I am afraid I have to look into other CI/CD solutions.