ASUS has products similar to eero with a more sedate design. The zen series comes in a range of shapes and isn’t tied to amazon.

Unplug the Appletv hdmi cable from your tv. Power cycle. Plug it back in and power on. You may have to go through the device set up on the tv again. HDMI-cec is one of the buggiest protocols for n existence. Sometimes it just breaks for no reason.