I have just gotten the app and it has told me to log in. I put my email address in and it sent me a link to log in. It then took me to the app and said put in your full name and birthday. When I had finished the was a next button that wouldn’t work so I was stuck on that page. I have uninstalled and reinstalled the app but still no use.
You need to make sure the email address you’re logging in with is the same one you signed up with.
Otherwise it thinks you’re trying to create a new account hense asking for your dob etc