This issue could occur due to some temporary issues with the verification services. After you click on the option to send a verification code to your phone, you will be presented with a box to enter the code and an option to resend the code below the box. I would suggest you try resending the code. If you had set up other options for security verification, click Other verification options, and then try again by selecting a different option. Also, make sure that your phone numbers are correct in your user account settings. You can also try using DATA RECOVERY programs if no solution works.