I had switched to acces mode (was suggested to make file sharing on network computers possible). Gave up after a while, and switched back to Router Mode. Modem hardwired to 1st Deco. From there to hub

My setup: Comcast router, hardwired to first Deco, hub (for other hardwired computers), 2nd Deco (hardwired from hub), 3rd Deco (wireless). This setup HAD worked, but I was not able to 'see' other com