You can add and verify your phone number on your Profile page.
Tips for troubleshooting if you're not receiving the verification SMS:
Double check and make sure you have entered the correct phone number.
Some phone operators block incoming text messages, try contacting your phone operator.
SMS apps often have Spam folders,
The carrier may have an error, and the text message may not have been sent out successfully. Please feel free to contact our support (firstname.lastname@example.org) if you have unsuccessfully tried to verify yourself five times in 24 hours or kindly send an SMS to the following number: +14156882231 for your carrier to accept Testlio as an SMS sender.