I have merged the accounts and a developer org did come over but when I try to test the challenge, I am getting the error below. I've completed and tried testing other challenges, but those have not worked either.
Challenge not yet complete in Financial Service Cloud
There was an unhandled exception. Please reference ID: OQNUJESL. Error: Restforce::ErrorCode::InvalidField. Message: INVALID_FIELD: Select Id FROM Account WHERE FirstName = 'Claire' AND LastName ^ ERROR at Row:1:Column:30 No such column 'FirstName' on entity 'Account'. If you are attempting to use a custom field, be sure to append the '__c' after the custom field name. Please reference your WSDL or the describe call for the appropriate names.
My FSC org was not linked to my trailhead account and it would not link, no matter what I tried. (New browser, incognito mode, new trailhead, etc.)
The only work around was signing up for a new FSC trial org and using 'India' as the country. '00000' for postal code.
I was then able to easily link that org to my trailhead account.