IVMS-4200 Error: Adding Failed(OpenSDK[305000])

Hi,

I'm currently running IVMS-4200 v3.2.0.10 on Windows 10. I'm trying to add a camera as Cloud P2P by entering the serial number and verification code, on adding I get the error "Adding Failed(OpenSDK[305000])".

5/7 cameras have successfully been added, not sure why the other two are giving this error as the settings/configuration appear identical for all of them.

Thanks