@ScubaStriker In EA desktop its difficult to do it (coz the app is the biggest * ive ever seen, even worse than xbox app for pc) so what worked for me to dont uninstall and installing again all day (coz i only have 2-3 mb/s download), was to change de titanfall 2 file from my hdd to my ssd (i think u can also change just from 1 ssd to another if u have 2) and then in the EA app i could install again the game and change the language to german and surprise, it worked.
For explanation: at the point where i say i could install again, u think that u have to install the game again but no, u just need to choose the place where u moved the titanfall file and select german and after a moment its done.
Hope u could understand me and i hope i could help someone with this. BTW sorry for my bad english.