You need to publish the article first before you can upload the pictures. After publishing, then go back to editing the post. After that upload the picture(s) then soon you’ll see a ‘Gallery’ tab.
People around the world also has problems with the new version but that’s the best thing I can do for now. I’ll fix it again later.
Do you have copy writer for so good articles? If so please give me contacts, because this really rocks!