@zexoni70 Thanks again for the detailed info. Our engineers will contact you soon to check the issue, and try to get it resolved.

@zexoni70 I found you have other posts talking about the roaming issue you are experiencing with the three C80s, we would like to have a specialist to follow it up, please check your email and...

@PaulVisco Can we have more details about this DNS request sending by the router? If you could provide some screenshots, that would be highly appreciated. Do you set a static DNS server on the...

@RadekLodz If that is the case, it's suggested to reset the C6 to factory defaults first, reconfigure it from scratch, then confirm again if you can find the correct menu, as we can confirm there is...

@BASO Yes, you need to modify the wireless security settings for both 2.4G and 5G networks.

@07mangesh We will discuss the issue on your own thread: https://community.tp-link.com/en/home/forum/topic/262208