problem with the synchronization between lightroom CC and Lightroom Classic.

I have a problem with the synchronization between lightroom CC and Lightroom Classic.

It usually works, but sometimes it ignores some images that I edit.
The image has the correct sorting and editing on all lightroom CC devices (I am logged in on two computers and my ipad) but to my computer where classic is located, the entire synchronization does not go through.

In the most current case, I have a folder with 216 images. 26 of the images are edited in lightroom CC but only 18 images are synchronized with classic.
Have been through this another time before and did not manage to solve it then either.