One of the most common IP addresses used to access the admin panel of routers is 192.168.254.254. If you are using a Windstream router, then you can go to its admin panel using this particular admin page. If you receive any error message on the screen, then there must have been a different IP address. You should have a word with Windstream support providers.
https://www.routerloginonline.....com/windstream-route