Hi, Created new free account, add all details include phone number but the “call me” option that I have on another account is missing on the new account. How o solve it?

Hi,We recently moved from on-perm Exchange to Exchange online (365).We used Ironport before that move and after the move. We're now with Hybrid configuration and all emails are received and sent from 365.The Ironport is our MR for incoming emails. We...