Hello,
Try to do this,follow my steps :
1. Go to My Documents\Euro Truck Simulator 2\profiles and find your profile - if you only have one profile it'll be the only one, otherwise you'll have to work out which one you want.
2. Open the config.cfg in the profile folder in your text editor of choice (e.g. notepad).
3. Look for the line uset g_force_economy_reset "0" - change the 0 to a 1 and save the file.
4. Now start ETS2MP and load your profile. You should receive a message saying "Game change detected", etc. Your economy will now have been reset.
5. Lastly, exit again and change that 1 back to a 0 in your config.cfg, otherwise it'll reset every time you start the game.
If this doesn't work, I think it's maximum.
Thank you,
Lukavsky TMP