ProMods

In 2.20, yes. For the companies that it makes sense for.

Is there an easy way for me to disable the krone 4 axle trailer?

I do not like the look and it is not compatible with advanced coupling.
At least I can't seem to back into it without crashing.

You can just select another trailer when selecting the job

There is no trailer selection in quick jobs. And I won't get enough money for my own trailer in a very long time as I use more real economy.
Estimate another 200-300 jobs to save up enough for a cheap one, unless I take out a big loan.

And unless I wasn't clear, I don't like its look so I do not want to see it even in AI traffic.
I've also tried to look up this trailer on the web and cant find any Krone trailers looking like it and/or having 4 axles.

In the replacement def under vehicles there are two sii files with @include lines, wonder if I can just comment out the ones with the Krone 4 axle...
The trailer is mentioned in a lot of cargo so not sure if that will create a problem.

About the Krone 4 axle. Advanced coupling does work. I actually spent about half an hour to an hour trying to figure that trailer out. The problem is the trailer sits lower than standard. After many trips to the upgrade shop I found out you can hook up if you use 295/60 tires (I use the Real Tires Mod). They put the truck low enough to fit under and hook up. I know this doesn't help as far as you not liking the look of the trailer at all, but thought I would mention the tire size.

Krone 4 axle is a well-done trailer, but I switch to another unless it is fixed.

Yeah, it's a trailer for low-deck trucks. I think there was a Scania or DAF mod with this variant of the truck.

As said before, the collisions on that trailer are wrong and they will be updated in a future update.

Any plans for Schwarzmuller trailers ?

Yes, they will receive company paint jobs as well in future updates.