Common sign-in messages and fixes.
Messages
- "Email or password is incorrect.": check for typos, or reset your password.
- "Too many attempts. Try again in a few minutes.": wait, then retry.
- "Password is required" / "Enter a valid email": complete both fields.
- "Verification failed — complete the check below and try again.": redo the check.
- "That verification link is invalid or has expired. Sign in and use “Resend email” to get a fresh one."