Have you done any of the things listed below before your font icons appearing working correctly –
  • Migrate the website recently?
  • Changed the domain name of your site?
  • Using WordPress Multisite with Domain Mapping?
  • Installed SSL Certificate?

You can fix the issue by trying solutions explained on the links below –

If none of these solutions work, you may open up a ticket in our support portal and we would be happy to debug this for you.