Yes, I have the icons. And yes, the pools work when there is only one entitlement (one or another). Actually, there was only one time when the hostnames were empty, currently (I am testing this again now), the hostnames of both RDP connections are set to some ID (one of them is 49d32592-887a-49c9-ac57-6635391f8192). When I double click the icon, I get the errors:

VDI: cannot connect

and then (after a few seconds) this error disappears and another one pops up:

49d32592-887a-49c9-ac57-6635391f8192: Connection failed

After that I can only click OK and that's it. In View Administrator -> Events, I can see this warning:

(SESSION:A28897A06AA610D3C089470FAB889A0A) Wyse device has not specified a Device GUID in the request headers. Falling back to using MAC.

But I am not sure that these are related. Are there any other logs I could take a look at? I have contacted WYSE support, but didn't get an answer yet.

Thanks.