When the cars in the server don't move try adjusting the dynamic track settings in the server.cfg file.
The following settings should work:
[DYNAMIC_TRACK]
SESSION_START=95
RANDOMNESS=2
SESSION_TRANSFER=90
LAP_GAIN=10
Please restart the server after changing the above settings and see if the cars move correctly.
If they still don't move you may want to adjust the following settings:
In the entry list.cfg file, set for each vehicle:
BALLAST=0
In the server.cfg set the following:
MAX_BALLAST_KG=0
LEGAL_TYRES=V;E;HR;ST
LOOP_MODE=1
ALLOWED_TYRES_OUT=2
DAMAGE_MULTIPLIER=100
FUEL_RATE=100
TYRE_WEAR_RATE=100
