Make sure you fill all fields marked with an *. These are required fields.

These fields are:

  1. Forwarding destination (in all cases except for the SIP call forwarding method, as you can leave this field blank);
  2. Contact information such as first name, last name, phone number, and address.

Please note, the phone number must be in the international format, i.e., first, you choose your country, then enter the phone number.
There are restrictions for the "Address" field: the field can contain numbers, letters (Cyrillic or Latin, while some symbols with diacritical marks, such as umlaut, may not be accepted), and basic symbols. The length of the address can be from 10 to 80 characters.