Gateway not working

Hello,

Connections via a DVLS gateway are not working, even though the 'test connection' shows successful in business hub portal, and in RDM the 'check health' returns ok. When a connection is launched either via RDM or the Hub website, it seems to try to connect to gateway, but the RDP connections don't fully connect. Running latest version of gateway sofware.

Pls let me know how to troubleshoot.

Thanks
Joe