1. Change your USER NAME
It is possible that your username already exists, change it or modify it.
If it doesn't work when you change your USER NAME:
2. Change your PASSWORD
- Your password cannot be too similar to your other personal information.
- Your password must be at least 8 characters long.
- Your password cannot be a commonly used password.
- Your password cannot be entirely numeric.
If it doesn't work when you change your PASSWORD it's because of you have got certainly an account on your website www.fb-curves.com. You must use the same account on app