When entering your telephone number, please just enter numerals only. The slashes will be provided for you as you type out. Phone numbers must be 10 numbers. Please do not enter the international code. If you have an international phone number, please email customer support. 

If you receive any error messages, please clear the field and make sure to manually add your birthday again. This clears up most of the issues. If you continue to experience problems, please contact customer support.