Connection of a brand new Apple TV 4K to a sharp Roku tv

Greetings. I have a Roku 4K 7131X, model 55S425-CA and a 4K apple tv. Everything was going great but recently I've been getting a lot of buffering. I've been down the road of unplugging the modem, waiting a minute, unplugging the power and HDMI cable from my AppleTV device. Connecting it all together again. It might work..it might not. I've also cleared the cache on my Roku tv. I've done a full factory reset on my AppleTv device and nothin! The constant error message when trying to connect to say YouTube or Crave TV is "unable to join the network "virginXXX" It works when I connect the ethernet cable from the apple tv device to the modem but that defeats the purpose of having a wireless connection. I believe the problem is with my Roku tv. I am able to use the Apple TV device on my Philips tv in the bedroom. Anyone else had this issue with Apple and Roku not having a love connection? :)

If it works over ethernet then that means there is an issue with your wireless connection. Best to run a diagnostic report on your computer using istumbler, netstumbler or similar. This will show values for signal strength, noise, and show any nearby networks.

If the light on the Apple TV box is on and solid then the box is working and the issue is likely with the connection. Try a different cable and port.