Continuing the discussion from Single Sign-on:
The integrated login should find any account you created here with the same email address you used on the main site. If you ended up with a new account here after single-sign-on, it likely means you used a different email address here.
If you update your email address on the main site to match what you used here, your next login may just fix the problem. If it doesn’t, we can delete the new account here and it should fix the problem the next time you log in.
Reply here if you need help with it.