The plugin straight up won't work.

[GeneralGamer13]

I sent a sticker to my friend to test the plugin (It was "Bren no work" from planet floof) and when I right clicked the image it never gave me the save option. I multi checked the plugin to see if it was a me issue but it was enabled each time I checked.

[Legnax]

Same, the plugin doesn't work.

[Teksura]

Experiencing the same issue.