Hello,
If you are trying to play ProMods on TruckersMP, you need to do the following:
Put the 7 ProMods files in your Euro Truck Simulator 2 > Mod folder.
Load TruckersMP
Select ProMods Server
Select your profile and load into the game.
If you are trying to use winter mod for TruckersMP:
Put the files in ETS2MP > Mod folder
Load up TruckersMP
Select a server and load into the game.
The only supported mods at the moment is ProMods, Winter Mod and Local Mods.
Steam workshop mods aren't supported in TruckersMP.
You can read how to install ProMods for ETS2 here: https://truckersmp.com/knowledge-base/article/614
ProMods Canada for ATS: https://truckersmp.com/knowledge-base/article/1122
How to install the winter mod: https://truckersmp.com/knowledge-base/article/84
Let us know if this has helped you with your problem!
Kind Regards,
JamesS014
TruckersMP Game Moderator