@myuinny I had all invisible text in rpgmaker just a few days ago. That particular one was a Japanese based game and there were a couple different ways I managed to get text showing up.
One, when you download/unzip a file it can depend what language your computer is in when you do these (this game should be completely English based so make sure you PC is fully in English mode at the time of doing those). I'll also mention that you might want to check if there is a more recent version of your unzip tool (within the last year I know a few of my unzips skipped a few internal files without giving me any error messages because my 7-zip was a year or so out of date). And then also play the game in English mode as well.
Two, the rpgmaker packages install several dll files on your machine when you set them up. They are named something like rgss100j.dll and the like. (101j, 102e, 104e, etc) I believe the E is for English and the J for Japanese. Regardless, I've sometimes had to rename a dll to get a game to work. **(see footnote) I'm not claiming this is a great fix, nor a highly recommended one, but it has worked on more than one game for me in the past. Oh, and let me add, I do believe the game normally checks the game's directory before searching your filesystem for the dll in question. So if you are going to try this route, simply copy the dll you are trying into the same directory as the exe and rename that copy.
** For the Japanese game mentioned previously, by renaming the 104e file to 104j (after renaming the 104j file so that I could replace the original later) all the text showed up.