Facebook page widget is not visible

Hello

I have add a facebook page widget on the startpage on bottom and it works fine with all browsers.

Except with firefox, when in "my case", its not visible and only looks blank space in the bottom where widget is, if I have activated the security setting for "Seitenelemente blockieren", its in German language in my case. If I deactivate that function in the Firefox browser, the facebook page widget is visible. If I activate that function, the facebook page is invisible.

The security function Im refering to is just left next to the address field when clicking on the shield. Here a screenshot: https://ibb.co/p1ZJC5K

I am not sure if that security function by default in Firefox is wheter activated or deactivated, so Im not sure if all the visitors will see the facebook page or not.

Question:
Is there a Generatepress Facebook widget too?

Or is it possible to just make a fallback for those customers who will see a blank space, to let them see a text or image, instead of the blank space if their security function is enabled?

best regards