Oddity finding Tablo behind 2nd Router

I have the Tablo connected to a routed in my closet. I then connect that router to a second router in my family room which provides the WiFi to the house. In addition, I connect a Roku box behind the is 2nd router in the family room. What is odd is that when I load the Tablo app on the Roku, it starts loading, then goes to the “connect to tablo” screen. I select the Tablo and all works great. What is odd is that the other 2 Roku’s that are behind the 1st router (the one in the closet), it auto connects and I don’t have to select it every time. It is unfortunate as the one in the family room is the most used TV, so the oddity is going to become an annoyance.

Any suggestions?