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.
wifi adapter not recognized
If you have a rtl88x2bu not recognized by Linux, you can try this:
git clone https://github.com/cilynx/rtl88x2bu.gitand then
sudo dkms add ./rtl88x2buand
sudo dkms install rtl88x2bu/5.8.7.1You should change the release number (5.8.7.1), if necessary, according to your own release.
connecting android to samba in Linux
You must add in smb.conf (in /etc/samba), at [global] section and at “allow hosts =” row, the android device IP, otherwise you won’t be able to connect it to PC samba network.
Then you can use several android apps, like X-plore (G-Play, commercial, but good) or Material File Manager (F-Droid, open source, quite spartan, but fast and reliable), to set the samba connection with your PC and view the files shared on your PC.
Provided, obviously, that PC and android device are both connected at the same local network.