Hi there!
Today I've encountered a strange problem. For some reason, all the smartphones in my apartment (2 different Samsung phones and a Xiaomi) are no longer working with my home wifi. They can detect the wifi network and connect to it, but immediately after connecting they show the same message:
"Connected to device. Can't provide internet".
After that moment, they got disconnected in a second. While usually, when I connect to networks without internet phones can still work with them. So the phones are going through the auth and IP assignment stages correctly, but the router disconnects them immediately after that.
All the laptops I have at my home connect to WiFi without any problems. One PC is also connected with wire.
I have tried rebooting the phones, the WiFi router and a small box where the optical cable goes. Nothing helps.
Don’t know what to do now. Please, help me.