@ChinookBG Sounds strange, I tested my TP-Link router and didn't see such issue, it seems that it only updates once after we click Upgrade under Online Update section. Did you enable Auto Update?

@User_guide TL-WR850N is usually provided by ISPs, if you don't see the guest network menu on its admin portal, maybe it doesn't support it.

@Nor7on My powerline adapter and extender are in the room with air conditioner, maybe that is why I didn't encounter such overheating issue.

@BasriCem Upgrading to HomeShied Pro paid service will have more advanced parental control features, but you should still have the basic parental control function without paying for the HomeShield...

@tenderfoot How do you find out the MAC address? on the client device or on the admin portal of the router? and if you connect directly to the main router, will it work? For some TP-Link range...

@Daniel5382 1.1.8 version doesn't support WireGuard VPN, you need to update the latest 1.2.3 version firmware.