Special amp

just one moment:
… on the css it is declared as Baskerville – but this is no Baskerville et sign.
To me it looks like the FF Clifford Eighteen italic
Try to find a google font like this …
Aha could be a Baskerville italic seem that a lot of Fonts got this variation on italic et sign

on base css line 379 there is :

.special_amp{
font-family: "Baskerville", "Palatino Linotype", "Palatino", "Times New Roman", serif; 
font-style: italic; 
font-size: 1.3em; 
line-height: 0.5em; 
font-weight:normal;}

and on functions-enfold.php there is the function: avia_ampersand
to rule the substitution. ( it set the ampersand sign between span tags with class: special_amp
By the way if you gave that custom-class: special_amp to a whole text-block it will show you that styling.

so a lot of users have the problem to get rid of it than to have the style.
And : Baskerville is not a good Websafe Font – so it might not be seen the substitution on older Win Systems: https://www.cssfontstack.com/Baskerville