No. The official TruckersMP mod always requires the latest or second-latest version of ETS2. As of today, TruckersMP requires 1.48+. You cannot play multiplayer on 1.45.
Right-click on and select Properties0;ee;0;423; . Click on the Betas tab. download euro truck simulator 2 version 145 link
Alternatively, maybe they want to download the game from an alternative source. But promoting piracy is wrong, so I should only recommend official sites. Let me make sure the steps are clear: visit the official website, check the download page, maybe there's an option for the latest version. Also, including a direct link would be helpful, but I should verify if they have a direct download link or just the store page. check the download page
[Insert actual download link]