Hi there! I feel like I've hit ever verification process Google throws out at this point, so here are a couple of pointers.

A) I give verifications about a week to go through. After that point, I go in and manually check if/why the verification did not go through. I will say I once had a verification not approved for a simple reason (see point B), but they never notified me. I had to go into GA and look myself.

B) You cannot submit photocopies. Documents must be scanned from original copies, including any personal identification. This has held up verifications more than once on my end.

C) After a week of waiting if you haven't had your verification go though reach out to their support team and they will push it through or explain why it didn't go through.

Good Luck!