In this case, as in many other, it a good idea to backup your settings. Indeed if you do a hard reset of your router, you loose your settings.
To backup settings you should use a browser (web-like) interface (firefox, or chrome, or an other one) using a url like http://192.168.1.1/ or something similar, and search for “backup” (or “save”) router settings.
a thoughtful use of digital