I tried changing anything at all but I couldn't find where to click because I couldn't see any of the text. But then I tried downloading a mod in case it was because it had opened or closed while I was downloading something (because sometimes I'm not as careful as I should) and it worked! Thank you!
A while ago, Mod organizer worked perfectly. But I just opened it again and half of the characters in the mod names and all the characters in the MO menus have disappeared. Basically, it now looks like this: Does anyone know what should I do to fix it or whether reinstalling the whole thing should work?