Hi there,
unfortunately, we can’t access to your WordPress.
On the link you send us where this problem is solved did you try with this part:
It looks like your server has some issues with fetching the .ttf and .woff core icon files.
We suggest you go to your theme (via ftp), go to css > core_icons folder and find core_style.css. Then at the top you’ll see font urls, delete the part with ?-3rspvc so you have.
If this not work please try to deactivated your plugins one by one and test then.
Thank you
Kind regards