Depuis la derniere mise à jour je n'ai plus la previsualisation des vignettes

Hello

Please tell me your version of app.

firefox =75.0 and Speeddial = 72.1.5

thanks 

Please try to update to Version 72.2.1

Yes but how can I do the update ???

Open url - about:addons and check extension updates from menu -

Sorry , already done and it say to me there is no update available 

Could you install 72.2.1 from https://addons.mozilla.org/en-US/firefox/addon/fvd-speed-dial/versions/ ?

Yes , all is right now many thanks