Cannot log in with correct email and password on app.cal.com (existing session still works) #30335

Issue Summary

I can't log in to my Cal.com account (app.cal.com, free plan) with email and password. The login page always returns "Email or password is incorrect", although the credentials are correct. An existing browser session of the same account still works.

Username: pijnresetcoach

Steps to Reproduce

1. I am logged in to the account in one browser (existing session).
2. In that session I went to Settings → Security → Password and changed the password. The old password was accepted and the change succeeded.
3. In another browser I went to https://app.cal.com/auth/login and entered the account email and the new password.
4. Login fails with "Email or password is incorrect".
5. Clicking "Forgot?" and entering the account email: no reset email arrives (spam folder checked).

I consider this a bug because the same password that the settings page accepts is rejected by the login page.

Actual Results

• Login with correct email and password fails with "Email or password is incorrect".
• No password reset email is received.
• The existing session, the public booking pages and the API key (v2) keep working.

Expected Results

• Login succeeds with the correct email and password.
• The password reset email arrives.

Technical details

• Working session: [browser + version]
• Failing login: [browser + version]
• Hosted Cal.com on app.cal.com (not app.cal.eu, not self-hosted)
• No 2FA enabled
• Profile shows one email address, marked as Primary
• An API key (v2) is used on this account; the response headers show a limit of 120 requests/minute and no errors

Evidence

• Tested on 10 October 2026 with several attempts, including a newly set password of 14 characters (letters and numbers only), pasted to rule out typing errors.
• I can share the account email and screenshots privately.

Could someone from the team check whether the account is locked or flagged, and unlock it?