doesn't work on my PC, with Windows 10 and Firefox 71.0

Ne fonctionne pas sur firefox developer à jour

Nothing show in firefox dev version69

De add-on installs, I can change settings etc.
But the icon doesn't show on top in the taskbar together with the other add-ons, so I can't use it. I use latest update v68.0 (64-bits).
For now only 1 star!

It doesn't work, when i click on wappalyzer icon it just shows blank page.

I can install this addon but the icon isn't show. I can't use this addon on firefox, on google chrome it's O.K.

My version of firefox : 58.0.2 (64 bits) Firefox Quantum

Läuft leider nur unter Google Chrom da meine Version von Firefox die 58.x ist.
Wappalyzer sagt mir aber ich verwende eine alte Version 42.0 und sollte 48.0 nutzen.