Are you sure you have entered the correct telephone number and country code?
Then it may be due to the following reasons why you cannot receive an SMS:
Landline number: If the phone number in your account is from a landline and not a mobile phone number, you will not receive text messages. To complete the registration you will need to link a mobile phone number.
Your phone is turned off or has no reception: this won't affect the notifications we send, but will affect the receipt of them
Notification Settings: Make sure you can receive SMS notifications by selecting 'Texts ON' in the section