Hello @Sk1tz,
First of all, thank you for creating a help topic in our Forum!
Unfortunately this is a known issue only a few users encounter when trying to update TruckersMP. While we are still working on that one, we found out that using a VPN fixes this issue most of the time. One of those VPNs we have found trustworthy is the following: https://one.one.one.one/
This VPN has fixed this issue for most users who got in touch with us, so please download and use this VPN and try to update TruckersMP again. Please let me know if this has fixed your issue, I am looking forward to your response!
Please let me know if anything helps you solve your problem!
Your confirmation of the status of your issue helps us keep the forum organized!
I look forward to your response.
King regards,
GonzagaSX
TruckersMP Support