I have an issue integrating WHMCS with OpenSRS Live System.
First of all, let me just say that I have done the followings:
1. I managed to integrate WHMCS to the Test System. I can submit order successfully to the test system.
2. I have added WHMCS server IP address to the Live System.
3. I have added additional module file requirements for WHMCS to connect to OpenSRS API.
4. I have added the private key of OpenSRS Live System API.
5. I have opened both port 55443 and 55000 in my server
WHMCS support insisted that the issue is related to both ports above being blocked by firewall. However, I have contacted my web hosting provider and confirmed that both ports are no longer being blocked.
Note that I have managed to connect to the test system successfully, so I'm assuming that the ports are open.
At the moment, WHMCS only gave me a general error message which tells me nothing.
So what could possibly be the issue here? Any help would be much appreciated.