CAX80 No internet via WIFi but no problem with RJ45

Just wanted to say that I was having similar issues to OP with my CAX80 - woke up yesterday morning with no internet access on Wi-Fi OR Ethernet even though the connection status looked good in the modem dashboard. Called my ISP and everything looked good to them as well. After resetting the modem several times I was eventually able to get internet access through the Firefox browser but nothing else…which was super strange. 

I disabled the Protection Engine feature like you suggested and it fixed everything! Now all my devices are connecting like normal. Thank you 🙏🏻 

I had similar CAX80 issues.  Hard wired devices worked fine, Wi-Fi devices could hook up to the router but had no internet access and nighthawk app wasn't working right either.

After multiple attempts to get the wi-fi working again, I ended up doing factory reset, uninstalled the nighthawk mobile app and started all over as if it was my initial set up of the router and the app.  Everything is now up and running. 

Unfortunately, this isn't the first time I've had to do this since purchasing the CAX80 in October of 2023.  Very frustrating and  I don't get why this happens periodically. 

Another ongoing issue we've had is that our Wi-Fi continually connects and disconnects to our devices.  Hoping it stays stable this time.

I came into this thread after reading about disabling the Protection Engine feature.  Is that something I should check and do to prevent this from recurring?

It did not help

5.1.1.8

Channels have nothing to do with it.

2-10 feet