[Cannot use World of Trucks (external assignments)]

Thanks for your answer

[Cannot use World of Trucks (external assignments)]

Hello,

 

i can not use world of trucks. My account is succesfully connected to world of trucks. If u choose "external assignments" i get the error
"This service is not compatible with the current version of your game. Please check if there is a new patch for the game."

If i press ESC, i get on the top left the message "Connection to World of Trucks has been broken" 

My ETS2 is on the beta version 1.37.

I hope someone can help me. I didn´t found a topic about this.

If you need more information like screenshots, please tell me.

Thanks