Delete submission and comment-form opening get stuck …

Hello,
I discovered this plugin a few time ago, and I am not able to figure out what is going wrong with both actions: delete and the comment-form opening, what reduces a bit the potential of use of it while it really looks so great in use.
The request is send but then nothing happens, comment form do not open and questions or answers are not deleted.
Do you have any ideas of what is going on?
Thanks