Having Problems getting a Fronius Watt Pilot 22 Go to talk to Charge HQ via OCCP

Having Problems getting a Fronius Watt Pilot 22 Go to talk to Charge HQ via OCCP.
I have recently replaced a faulty Schneider smart charger that was controlled via Charge HQ with a Fronius Watt Pilot 22 Go, I have entered all the settings into the new watt pilot and established an internet connection via Wifi and can control the charger via the Fronius Solar Watt Pilot App, but all attempts to get the new watt Pilot to connect to Charge HQ keep failing. I have updated the firmware on the Watt pilot to the latest V42.5, i hav also tried two older versions with no success.
Looking for suggestions of where to start