@StuartP I have been using my C6 for 17 months now and up until tonight I had never seen this issue. Tonight all my 2.4G devices disappeared from the network. I schedule a reboot every Sunday at...

@Kevin_Z I have no idea what the firmware version of A6 is. I am just making the point that this issue is not confined to the C6. The firmware on my C6 is 1.3.4 but I have never seen this issue.

@Kevin_Z This issue does seem to also affect A6 routers. For some reason I seem to be lucky with my C6 but I am certainly not going to update the firmware just in case I acquire the issue. I am still...

@Mare007 Yeah I found that but you can't whitelist your devices there. Maybe it is in Access Controll settings.

@adios Where are the firewall settings for the C6?

@Kubas How long have you been unable to change the channel? Have you tried resetting everything to default settings? Sorry if that sounds like what TP-Link would say.