Problems with the zotero button

Hi,

Everything was fine yesterday but since this morning, when I want to add a zotero citation with the "Z" button, the dialog box is not the red zotero line but the same dialog box as the button "insert link" (you can see the picture).
https://s3.amazonaws.com/zotero.org/images/forums/u10651777/wizavz6tf8duxa8whkuo.png

I tried to reinstall Zotero and Zotero connector but it doesn't change anything.
It's working on Word

Another girl in my class have the same problem...
I hope you can help me !

Laura
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