Antidote 10 plug-in installation on Studio 2019

I have just purchased Antidote 10, it is correctly installed on my computer (works in MS Office suite among other but I cannot manage to install the plugin for Studio.

When I download the plugin, it goes into the following folder : C/Users/User name/AppData/Local/Temp

When I double-click on it, nothing happens. I have tried this with Studio open or closed.

I have tried to copy the plugin file in C/Users/User name/AppData/Roaming/SDL/SDL Trados Studio/15/Plugins/Packages and to launch it from there but nothing happens either.

I have looked at the other questions on the matter but nothing worked.

Please note that I encountered this same kind of problem previously for other SDL plugins from the App store...

Any idea ?

Thanks in advance,

Johanne