Sounds Great !!! Sorry for making you wait that long. I was busy with IRL life, I forgot to answer. Thank you for your post here, and if there is any other question, you know the placeAntimatter Dimensions, an incremental game, not a system app.
I played around a bit with the apk, and not changing anything in it, but just de- and recompiling it doesn't work either, unless I tell apktool to not decompile resource files, which makes the entire ordeal of, well, changing resource files, a bit harder
Ok, I opened an issue on apktools, and apparently it wrongly decompiled the "<" in plurals.xml's
So uh, yay, it works now, thank you so much.