Need 3CX Expert to help add a few phones to my system

I have 2 3CX Systems setup. System 1: Local on my network at Office 1. MY hardphone can autoprovision without issues. System 2: Remote office. Softphone works without issues. Hard phone I need to manually add for account 2. I was unable to get it to register. I also had my admin create a VPN connection direct to that office so i have a local IP to use. I am using Yealink T46G Phones. I can provide access to both 3CX servers, but i need to be able to add multiple accounts to the phones and manually provision the phone Please only apply if you are well versed with 3CX troubleshooting