Share Simple Button Adder isn't working

this is my web page – https://www.militarium.org

I confirm that FB counter isn’t working anymore on my side too (on 2 sites which was working before). Doesn’t seems to be any response from the owner about that, that’s sad… Even on their own forum for the “Plus” version :
https://simplesharebuttons.com/forums/topic/counters-not-working/
We’ll have to look at another plugin or service, any advise welcome!