Thanks for bringing this to our attention! It appears that due to a recent update to libphonenumber (which is used by Identity Verification to validate phone number input prior to attempting verification), the phone number for the Ben Wyatt test user no longer works. The team is looking at this issue to replace the phone number for Ben, but for right now, this test user cannot be used. (When Ben's number is updated, I'll edit this answer and leave a comment.)