EuroTrans A/S

There seem to be no working answers to this, and I see others have the problem. Yes, I have submitted a ticket, the reply did not help and seemed like an automated message. I have tried NONE-opt out as well as 1.26x and the 1.26 public beta. I have also completely removed and reinstalled the multiplayer mod. However, it tells me I have an unsupported game version, would i like help downgrading. Clicking yes freezes it and gives me nothing, clicking no gives me a message that says Cannot initialize client core or something. I am currently Opted out of all betas, but it doesnt work. I have ETS2 installed in my F drive, which worked fine before vive la France, which I did not buy. Ive played multiplayer for over a year and had ETS2 for at least 3 and this is the first time Ive had to ask for help on anything like this. Any help with this? Any is appreciated.