Solved
Game version doesn't match the server's version.
I tried many ways to force the new update on my game, and eventually, I did a whole clean install only to find that my game's version is still not up to date. I'm pretty sure that this is not an iss...
Well I managed to update my game by dleting the Bitraider folder, activating the launcher to create a new one, exiting the launcher, bringing back the old bitraider folder from the trash bin but pressing skip all files, relaunching the launcher, and it forces the update.
