Hey there @Joky69,
thank you for creating a post on our forums.
To hopefully resolve your problem, I need you to open up a text document, enter your password as well as your E-Mail, copy both separately using CTRL+C and paste in both in the respective section using CTRL+V.
If this has not helped you out and you are 100% certain that you are using the correct login details, please contact the TruckersMP Support Team using the following link.
-> https://truckersmp.com/support
Please let me know if I was able to help you out or not.
Happy Halloween!
Best Regards,
Snorlax.
TruckersMP Trial Support