Long hold on the account icon, bottom center.

A pop up will appear allowing you to pick which account you are using (you’ll only see one since you haven’t added a second yet).

Click “edit”

Click “+”

Edit: on that page “pick another server” appears to bring you to that server’s sign up page. If you’ve already created an another account, use the “log in” button, which is below “pick another server”.

Click on where it shows your current insurance (middle bottom) > accounts (upper left) > edit > +