I bought a RE305 and did the setup step by step.  but there are 2 problems, whenever i get home my cellphone doesn’t automatically connect to the repeater, the internet signal in my room is horrible, and even with the RE305 it doesn’t improve at all.  in fact, it only connects if I open the Tether app.  

Shouldn't it connect automatically?  

when i open the tether app it connects, but the internet gets worse, making me disconnect and continue using my internet without the repeater.  

my house is 90m2 and the repeater is in the socket 3.5m from my modem.  I am dissatisfied with the product.