Hello support-team,
the plugin is working now!
The problem might be in the firefox browser.
I updatet it and everything was okay.
Nevertheless – Thank you for support.
Thank you for the screenshot. But this is the problem.
With my Mozilla Firefox I don´t see it in the frontend.
In the backend I miss the icon on the left Sidebar too.
Screenshot frontend
Screenshot backend
Sorry, I´can´t explain better.