@Kevin_Z Thanks Kevin, it helps and i would like to double check if Deco M9 plus connects behind a vpn router as access points, will Deco M9 plus lose any wifi coverage ability or any other functions...

Just like the title I would like to check if the Deco 9 plus mesh wifi system as access point and connected to a router with vpn server function? I want the mesh wifi coverage and vpn server...