Hi Mindy,
I have attached the screenshot where it shows issue name of SSL certificate used and FQDN of ADFS server machine(WIN-NELQT4EAI4G.cloudprocedo.com). Please have a look at it.
Also from one of the previous issues faced that "Host win-nelqt4eai4g.cloudprocedo.com couldn't be resolved" , can you please confirm that who is trying to resolve that hostname here?Is it Office 365 server or ADFS server or AD server?
Waiting for you reply.
Regards,
Eca Connector.