Bigfix.me Sync Issues and not working

Our bigfixmesync sites have not been updating for a while so I dig into the logs to see whats happening…

This is what im seeing from the latest log.

entry function=“Main” filename=“Program.cs” linenumber=“274”>
10/17/2019 16:59:41 PM
True
Unable to read dashboard datastore variables. Open the console Synchronization dashboard for the first time.

Error Result
The underlying connection was closed: An unexpected error occurred on a send.
Authentication failed because the remote party has closed the transport stream.

One answer to a similar problem was reported on an unrelated forum

“The server who is hosting the socket server MUST have installed on its Certification Storage the certificate WITH the Private Key. If you install it without it (just the certificate or just the public key) you will get those errors of authentication failure.”

Anyone have any ideas?
Im have tried both https://bigfix.me and http://bigfix.me with the same results…
I can use the same credentials and log in manually to bigfix.me successfully

Could I ask what version of BigFix server you are running?

the Latest… 9.5.13 Versions