connecting problem with home wifi

Hi there,

I have a problem. Adobe Connect won't connect as soon as I want to start a session. It just sais "Connecting..." and 5 min later while he diagnosis programm "it wasn't able to connect"

The strange thing is, that Adobe Connect can connect at my work place, over a VPN or mz mobile hotspot - but not at home with my wifi. That's so strange. Has anybody an idea?

thx so much in beforehand