@RRRadiant Since it seems the problem started with the new firmware you could downgrade your firmware to see if that fixes the issue. This would require you to download the firmware from the product...

@KeithU So it's possible to roll back the firmware to see if the problem goes away but you have to download it, and install it via the web ui

@RRRadiant Not sure why it would have done this just by upgrading your firmware but did you check to see if parental controls were turned on after the update? Are you using the normal DNS address or...

@evilbunny A few other trouble shooting steps you can try while we wait for David If your Deco system is configured for DHCPv6 on the WAN port and the Deco app isn't showing the WAN IP or DNS server...

@evilbunny Ok going to let a member of the tp-link staff know about this. It shouldn't be clearing the firewall settings like that. While we wait for them to respond please look at the following post...

@evilbunny Were you having the same issues before trying the beta firmware?