Have not seen this before. By chance do you have a backup of the router prior to the changes? What changes did you make? Are you connecting via WIFI or cable? Try deleting the network from your PC,...

On the iPhones, have them "forget the network" and then connect to the network reentering the passwords. Be sure all of the settings on the guest network are the same including the security settings....

I have a C8 and think the C9 will have the same options. Set up a Guest network with a different SSID. Put the streaming devices on it. The guest network has time controls. My C8 allows the setting...

There are reported issues with using the same SSIDs and passwords although some have it work fine for them. I have not done it but I suspect it may vary by the connected devices. I like to have...

That is strange. I would have thought the router reset would have fixed things. Are you using different SSIDs for 2.4 and 5 GHZ bands? Using the same SSID can sometimes cause strange issues. Does...

I have a Archer C8 v1 which I use port forward for a security DVR and some WYZE cameras. On my security DVR, I use internal ports 81, 8000, 8554, and 443. On the C8, I have them all set up as TCP...