Summary
An HMRC account is typically unlocked within 24 hours after too many failed logins. Use HMRC’s recovery steps to reset your details, or contact HMRC; when you regain access, return to your Konfir link to connect.
While you wait
You can continue your Konfir verification by skipping HMRC and connecting other sources (Banking/Payroll), then submit; your verifier will follow up if they need more.