Everything works but the wireless DVR for my 2nd TV downstairs
I'm sure this question has been asked and answered a million times already, but I'm having trouble finding an answer that both gives me a working solution as well as makes sense in my laymen's understanding.
Here's my situation:
I recently installed the TP-LINK Archer C7 AC1750 router in order to improve the U-Verse wi-fi in a dead spot on my main floor. The U-verse modem/router, the gatweway to link DVRs (this is the small, narrow black box that only has one button on it - WPS, and two lights - one of which is LINK, and plugs directly into the modem/router), and the primary cable box/DVR are all on my upper level. After installing the Archer router, the wi-fi is much improved downstairs but I still get dropped signals often while doing things like watching Netflix. The real problem however is that the wireless cable box/DVR on my main floor will not link to the primary box and will not record anything, but it will play TV just fine. I currently have the gateway plugged into the U-Verse modem/router. When I tried plugging it into the Archer, nothing worked.
Where did I mess up the installation? How can I get the wireless DVR to link and record?