I can't connect trucks to tanker trailers

I can only connect gavril T series trucks to tanker trailers, dry van trailers. But I can't connect trucks like man truck, kamaz truck, volvo truck. There was no such problem in the old updates. How can I solve this problem?

 

These truck mods use old coupling system which was updated in 0.31 (i think). Author of the mod needs to update it to make it work with new coupling system.
But you can use legacy trailers with old coupling system if you want to have a great american truck simulator rip-off in beamng: https://www.beamng.com/threads/0-30-gavril-t-series-and-trailers.95616/#post-1667528

 

I tried. But unfortunately the tanker does not have suspension wheels. It needs to be updated.

 

Well, i dont know then, everything works for me.

 

I also need to install common_legacy. It works now, thanks.