2019 RDWebClient, RDS Published Apps - missing something, just not sure where

University setting, VMWare & Microsoft

Internal domain local.name.edu  external domain name.edu 

Setup 2019 server vapps-01.local.name.edu  outside name vapps.name.edu  going through Barracuda load balancer as a proxy. using a wildcard cert *.name.edu (vapps-01.local.name.edu  as SAN) and applied down the line. Thumbprints checked and verified.

from browser, can open https://vapps.name.edu  that is redirected to https://vapps.name.edu/rdweb/webclient  and connects to vapp-01.local.name.edu/rdweb/webclient  and comes up with login credentials. Can login using local\name and password.

Brings up console with applications and when application is selected, "opening remote port", "Configuring remote port" and dies there. "Oops, we couldn't connect to "app" The connection to the remote PC was lost, This might be because of a network connection problem. If this keeps happening, ask your admin or tech support for help."
Well, **bleep**. That's me.
As far as I can tell, the app is opening an RDP connection on port 3392, which is open in firewall and has SSL cert attached to it but the connection is failing.

I am hoping someone out there has had this happen to them and they know what check box I missed or link I need to change. 

Wireshark makes it appear as 3389 is dropping session with a RST, ACK Maybe that is issue. Could be DNS, Could be needing a gateway... Hopefully someone has experience with 2019 now?