A bit of a weird one when the accordion is on the page it makes the all the social media icons broken.
Not sure what to do to make it stop happening.
Welcome to our forum.
This is happening because we are using the latest version of font awesome, you will need to update font icon class. or ask theme author to update it.
I also checked your page, can see some others plugin also loaded older version of font- awesome but it will not solve the issue.