Let's see if we can clarify the issue. There are 4 buttons:
1) Links
2) Images
3) Record/Upload Media
4) Documents.
The third one is only for videos, not for images, and only works if you have a video platform. That is one of the big known issues with the open source version.
For uploading images, you have the second button.
So you say you can't upload images, then it means the second button is missing?
What would be the benefit of seeing the third button (Media)? Maybe they disabled it when you don't have a media server?
