But they have different series number and when I renew my license I only got the new code for 26 version and the older one says the license will expire soon (has a different date of expiration). So how to renew also that one?

Thanks a lot for your help. Now it finally works as it should be. It was about changing element to publish in Publisher Set. They really needs to be Layouts, not only Views.

I have this option turned on. You said I need to import 3D model and PDFs? Or you mean "views" made in ArchiCAD, which I choose in Publisher? Do i have to connect model with views or change something in ArchiCAD to make it work? I use student version...

I published a BIMx model with Publisher and added a 3D view and layouts to that file.