Problems with lightroom Sync

I'm having trouble with the program synchronization between my Lightroom collections with the cloud. I had a photo that was appearing multiple times in every online collection taking place of the photos that has to be there, so I deleted the sync data and then created new sync data. Now I have the green check icon in the cloud, but it's not uploading any photos to view online. I've already uninstalled and reinstalled the program, but it still not working.