Could you please confirm if you have the correct phone number format in your account? As an example, the correct number format should be 880-xx-yyyyyyyy. XX here is your mobile network operator, and yyyyyyyy is the rest of your mobile number. As an example, it should look like this - 880 1890442492. Please check if you may have added any extra number in your mobile number by mistake.
If you think you have added the correct information, please let us know and our team will assist you further.