Enter the email address you used to register
The resend-verification panel blocked submit because the email field was empty (auth.resendVerificationNeedEmail).
Why this happens
Client-side check before POST /api/auth/resend-verification. Not a mail-server failure and not “invalid format” (Enter a valid email address).
Diagnose and fix
1. Type the registration email (or confirm the read-only value if the panel locks it).
2. Submit again; watch for rate-limit or mail-send errors afterward.
3. If unsure of the address, check Admin → Users or registration confirmation mail.
4. After a successful send, use Emails are not arriving — checklist if nothing lands.