The $10 correction fee should work, but I have my doubts that the $20 two-month membership option is working correctly if selected during tournament validation, because the tournament system currently has no ability to update someone’s membership type or expiration date.
I’ve raised this issue but it may not be addressable in the current system, though hopefully it is something the new tournament software will be better able to handle. I think the membership batch processing system can handle the trial memberships, though.