@Dusty Star: Okay, so you started from a 'working' setup, not the broken fonts, that makes much more sense, thanks
.
As for the browser, unless you enabled the browser fonts feature, it should be using the Kindle's default fonts (ie. Caecilia_LT_*.ttf & co) , so, unless you removed them as well, there shouldn't be any issue...
For the logs, just type
;dumpMessages
in the search bar on the home screen. That'll create a .txt files with a name starting with all_logs_ in the documents folder. You can then zip it & attach it here
.