@bjlockie In this way, the log might stand for multiple meanings and I would check with the senior engineers again. Sorry for the inconvenience. As for the two mobile phones, have you tried to turn...

@BenJacko Hi, is there any chance that you could test the VPN connection on a different network, such as the mobile hotspot from your phone? And is there any change recently, like a firmware upgrade...

@Keeper76 Hi, the following link might provide more details about this issue: WAN/LAN auto-sensing

@garwilsh Hi, is your network layout like： ISP—Main Deco X20----master PLC~~~~extender PLC—Deco X20 I tend to think the speed was capped by the powerline adapters. Do you have any wired laptop so...

@STAG162 In this way, maybe we could consider switching to power line adapters. If the shed and the main house are under the same electric circuit/power grid, Deco P9 might be a good idea. Or a pair...

@nyteodoro Thank you for updating here and I am glad to know everything is working fine now. Also a great thank for your time and patience with us.