I accidentally signed up under USA instead of UK and now when I try to switch it, it says the email is taken which it is under my account, but it won't let me go forward.
Hi, @Lilybug2908! Welcome to the community.
Firstly, please try the steps listed in this suport article on how to change countries. If that doesn't work or you've already tried it, reply back and we can troubleshoot further.
If this has solved your issue, please click "Accept as Solution" below. :)