Hi there! I'm getting an error that my sign up is invalid, and to check for duplicates and correct. I'm not seeing any issues. I'm also not able to edit/add my letter link. When I try I get a message "it looks like you already signed up for this exchange." I'm wondering if somehow AO3 has put me through twice?

Signup link: https://archiveofourown.org/collections/CandyHeartsExchange/signups/450246
AO3 name: Synergic