I think this happens because the low level on the ability points and the trailer do not require other points ex (Valuable cargo, refrigerated and others)
Anyway will be an update to this trailer who include's more types of trailer's
This update will come in one or two days from now and with another mod with Duvenbeck's skin.

this mode likes to eat job market 1/2 page 2 , page 3,4 ! wonder why ? for more buis?