NADA ,is a way of speaking "nothing"
When I press Save or Apply, I can see that my webbrowser is loading a new page. The page is loaded again but I end up with the same Jevents window, with the original event properties. Eveything what I had edited is reset to original. this is for title, timesettings and event description, these are the fields I have tested.
In the editing window I cannot see any changes are saved after pressing Save or Apply, after reload of the page is is set back to original.
The edits are for sure not saved because when I look in the calendar (frontend webpage view) the event is as original (original time, original title, original description)
BTW: backend is no problem at all, working fine.
What can I do as test, shall I sent you screenshots of check some settings?