Accordian dsiplaying visual artefacts on opposite side of screen

Hi,

It looks like this plugin is displaying incorrectly as per this screenshot: https://highfieldmarket.co.nz/wp-content/uploads/2020/09/accordian-issue.png

You can see that the ‘+’ signs are appearing in two places on the screen.

You can ever click this artefacts and they manipulate the accordian. Any thoughts?

Thanks for your help!

The page I need help with: [log in to see the link]