@Nishi7283 The latest FW release for Archer C7 v5 is Archer C7(EU)_V5_1.2.1 Build 20220715 - here. If you are on this FW release there's no need for update. The router power adapter could be a reason...

@Tyber When in AP mode, C80 should have its DHCP server disabled so the only active DHCP server would be on the BE230 - detals.. Thus, every device connected to BE230 or C80 should receive its IP...

@AlanL Can't say, cause I have no experince at all with this device model. If I have to make an educated guess, I would say that you should be able to downgrade FW if you want. If things go south,...

@AlanL That's the issue with the ISP provided devices - the community doesn't support them, hence you can't find a newer FW release or a support page. It seems that on the Italian support portal...

@AlanL In general configuring the guest network should be a straight forward process described here. There's no need for configuring an additional DHCP server pool for guest networks. Since you DSL...

@Buckchucko The two options for changing signal strength are: 1. Positioning the router for optimal performance and reception - details. 2. Changing the transmit power of the router - details.