There are two ways to add a phone number to your WayScript account:
Edit your Account Info in your Account Settings page.
First, enter your number in the "Provide a Phone Number" dialog when prompted.
Next, in the "Verify Your Phone Number" dialog, click "Send Code" to receive a one-time verification code via text message. (Standard text messaging rates apply).
Once you receive the code, enter it in the "Verify Your Phone Number" dialog and click "Verify".