Not working on mobile?

Hi! I just tested on WordPress 5 and they are working for me – can you please post some screenshots and a link to the site?

Hi!
the site is: https://cemap-interludium.org.br/
I don’t know how to insert screenshots,
but I can give you the link of the new post:
https://cemap-interludium.org.br/protestos-na-franca/politica/09/12/2018/

and one of the old ones:
https://cemap-interludium.org.br/o-que-e-o-cemap/cemap/09/11/2018/

The footnotes work ok in desktop, but not in mobile. Not in my smartphone and not in the smartphones of two friends that I asked to try (different phone models)

I’m quite frustrated, because I like your plugin very much!