I suggest you install 4.34 firmware and then see what happens. 2.1.2 is really old and could have who know what problems.
You can download the 4.34 firmware from
https://pgaskin.net/KoboStuff/kobofirmware.html and manually install.
To manually install, unzip the fimware ZIP and put all of the files in the .kobo directory on your Kobo. If you need to, use a friend's Windows computer.