If the email address used to register an Athletic Clearance account cannot be remembered, there are two options.
If there is at least a partially completed clearance, contact the School's Athletic Office and they can assist in recovering the account username. The completed clearance does not have to be from this year! A School Admin will be able to view past and current clearances to retrieve that account username.
If any part of a clearance has not been created yet, this account username may not be able to be recovered. It may be best to create a brand new account with a valid email address.