SuliHD's post in Daf was marked as the answer
try this, go to steam, go to games, right click on Euro Truck Simulator 2, click on properties, click very integrity of game, let it update and try again. If that doesn't help, enter a ticket on https://support.truckersmp.com/
SuliHD's post in Game freezing was marked as the answer
have you re-installed your game and the TMP Mod?
if you haven't try that, if you have, Run your game as an administrator. Also, verify integrity of game on the game settings. If you want more help please put in a ticket on support.truckersmp.com
Hope this helped