Cannot delete files

I try to add a new file however error appears, I tried repeated occasions, after a few minutes a lot of new files appeared, all the same, I was able to delete some, but most of them do not allow me to erase, I suppose it is a temporary error, but this was yesterday and today I still can not

here is the link:

We have deleted the redundant entries. We are not yet clear where the problem comes from but we are working on it.

now all the comments are lost

You mean the comments on your product page?

Anyway, thank you for deleting the redundant files!