Unable to get Client Connect to work using digital certificate.

I'm having an issue with the authentication type for the sophos client connect. I currently have multiple interfaces serving as Site-to-site VPN end points so I don't think I will be able to use pre-shared key. When I have tried to select that option, it says it will update all the PSK's so I am trying to setup the digital certificates. For the local certificate I've selected to use the Appliance Certificate and the remote certificate I've uploaded one to use but every time I try to save it I am getting an error, The sophos client could not be updated.

I appreciate any assistance.

Thanks