Sign in and open Settings → Username. Enter the username you want and, if useful, a short reason for the change. RexiMemo checks that the requested name is valid and not already in use before the request is submitted.
Your request is then placed in the moderator portal for a moderator or administrator to approve or deny. You can have one pending request at a time, and the requested username is reserved from other pending requests while yours is waiting for review.
If the request is approved, your existing account is renamed; your account ID, linked FSIDs, Flipnotes and other account data stay attached to the same account. You will receive a RexiMemo notification after staff make a decision. Staff may deny a request that would cause impersonation, confusion, moderation problems, or another naming conflict.