Apple TV not recognizing network

A month ago ATV was working fine onthe WIFI network in my building but now it will only recognize someones free network which is horribly slow. I have reset it numerous times, unplugged it, reentered the password numerous times and called support from apple and wifi company. No one seems to be able to fix it. Basicall the apple tv is a paperweight now after 5 months of owning it. It no longer connects to my ipad either even on the same network, they dont recognize each other. Anyone have the fix for this???