can I see the date of last modification/upload of indicator in repository?
I also noticed that 6 months ago there were more indicators in repository....What have happened to some indicators?
As far as I see, only the creation date is visible. If you download them, then you can compare the difference in creation and modification dates but it's not quite practical.
Are you really sure there were more indicators? Currently there are 105 indis, 81 with mqh version for export. Maybe you're mixing up those numbers? And again as far as I know every author can maintain their own indis and essentially it is their right to upload or remove them, maybe some people removed theirs.
I think user Yavor had a hand at developing the repo. https://forexsb.com/forum/topic/2575/hey-there/
Maybe he can take suggestions for improvement, but on the other hand I told him that for instance I can't open indicator code in full in the repo, he was only amazed by that. Oh, and then there was the notorious forum software update, which prevented file upload - it lasted for months. And the post-like function. I had the nerve to down vote him once and he came after me for that I think you got the idea, sorry for ranting, but some things are hard to forget