Hello again,
I copied my site, I restored the last version to see if it has the changes, but I have a problem :
The developper tools section DOESN’T SCROLL nor does it have a vertical scroll bar 
I’m STUCK! I can’t see ALL of my databases since the list is longer than a screen’s height!
Same thing for my pages
I tried turning off then back on the tools… no change, refreshing the page… no change
I’ll try to get some phone support on this.