An exception was caught trying to call A2A using a certificate- Unable to connect to remote server

I was successfully able to test this script from my customer PC, but when they tried to run from an Azure server, they received this error:

We tried reinstalling the root, issuing-CA and p12 certificates, but that still did not work.

what does the "Unable to connect to remote server" mean-- that it can't connect to Safeguard?  We also tried changing the appliance input from IP to FQDN-- but still got the same error.