Fire Stick working, web working Roku Streaming Stick+ not

I’m not sure what is happening. My Roku is saying Tablo DVR was not found, but the Fire Stick is working fine as well as the web app. I have rebooted both devices several times. I’ve had them for over a month now and they worked fine until two days ago. I have even uninstalled and reinstalled the Tablo app on the Roku. Someone please help!

Have you rebooted your router?

I did and it worked for about 5 minutes. I was watching tv and all of a sudden it said the Tablo DVR was not found.