@Tyroul Thanks for your reply; we did a test at our end, we can connect to the kasa camera and the KC110 can connect to the router successfully. You can try to change another smart phone or reinstall...

@otilumn Thanks for your explanation. Have you ever tried to change another socket to plug this Deco P7 or change another ethernet port on the switch to connect the main Deco P7? Try to swap their...

@AKH Any error message shows up if you failed to setup same SSID for 2.4GHz and 5GHz both? Try to use different web browser/devices; meanwhile, you can hard reset the Archer C5 to give it a go. Still...

@Aab142an With the extender powered on, use a pin to press the RESET button for 1 second. The extender will reboot. Then please watch the setup video or follow the instruction to configure it....

@nard007 As far as I know, there is no Agile Suites for TL-WA840N; May I know why do you need download this? And what is the model number of other product?

@AleB Any error message pops up which indicates that the chromecast does not work? What is the current network diagram?