I typed in my linked in account into my profile.  I went into my profile->settings and clicked connect to social account for linked in.  I was redirected to a page to type in my linked in credentials.  I type them in and it says they were successfully linked and I click a button to go back to trailhead

I receive a message in a red banner that says "Whoops, looks like there was a problem. Please try again."

I try to log in using Linked in credentials to trailhead and it looks like I had created an account previously using my linked in credentials.

Is that the reason why I can't connect to my linked in account?  Can I remove the linked in version which I never used and connect the accounts?  Is there anyone I can reach out to for this?