@terziyski I disables it and splitted 2.4 and 5GHz and it was working even worse i tried to connect it via LAN and there was still problem with all of that i think something might be broken with this...

Hey, i have a question i have dualband router with 5GHz and 2.4GHz the network chooses automatically between these two frequencies. And should i split it to 2.4GHz and 5GHz to make extender work...