@d0ugmac1 Thanks! It really looks like the same problem. The only difference seems that I'm already running FW2.1.2 on my router and that was the fix for him. Hope the devs will fix the problem soon.

@Virgo the internet connection is stable and fast. It's inside a huge data centre with my own static op address fully open. The server is a windows machine with windows server 2016 installed on it...

@d0ugmac1 That's the method I've used to migrate indeed.

I've got a windows server running in a remote datacenter and have the OMADA software controller running on it. At home I've got an ER605 VPN router running and tried to connect it to my Software...

@rama3124 Not sure if the opnsense router works the same as the Omada routers. But have you checked that you configured the VLAN on the correct LAN port of the router? With the ER7206 I've selected...