@Solla-topee actually after I wrote the previous comment I discovered that's something ever stranger: Connect to Network: 2.4: enabled, 5: disabled, and Extended Network: both enabled => Android...

@Solla-topee stability: 1. The setup is this: - main router: it's place is the same since we moved in to the house. The router itself was changed a few months ago from Mi Wifi to Tp-Link, but with...

@Andrsouzaaa 5GHz uses channel 40. Why do you think that can cause the problem? I do see the RE450 is connected to the main router.

@Andrsouzaaa yes, now there's no internet on the RE450 neither on 5G nor on 2.4G. I also rebooted the main router and i see in the main router's clients the RE450 is connected and not blocked. Any...

The RE450 extender worked for a while, both 2.4 and 5GHz. Since last week when I'm connected to 5Ghz I don't have internet. I checked the main router (tp-link Archer VR600 v3) and it works, the 5GHz...