Several factors can cause this issue:
- Case sensitivity: Passwords are case-sensitive. Ensure your Caps Lock is off and you're using the correct combination of upper and lowercase letters.
- Browser autofill errors: Your browser may have saved an outdated password. Try typing your password manually rather than using autofill.
- Keyboard layout: If you use multiple keyboard layouts, verify you're using the same layout as when you created your password.
- Recent password change: If you recently changed your password, ensure you're using the new one rather than the old one.
If none of these solutions work, use the password recovery process to reset your password securely.