Can no longer access the router through the app

 Not exactly sure what happened, but for some reason I can no longer access the router through the app.  When I launch the app it tries to connect....it spins and spins and lands me at the "login with your admin credentials" page.  I try that, and it once again spins and spins until it times out.....I've checked the app to ensure the local network slide bar is set correctly, I've rebooted the router several times, as well as tried setting it up as a new router...it just won't connect.   

Firmware version is V1.4.3.88_1.3.50.  FWIW, I can connect wirelessly no problem via the browser.  Just wondering if anyone else has seen or had this issue with the app? App version is the latest at least on the Apple store, v2.16.0.299