@Jeroen: Thank you for your message, and we sincerely apologize for any inconvenience this may have caused. The issue you’re experiencing with the boxes appearing instead of the arrows is due to the Font Awesome icons not loading properly. To resolve this, please add the CSS below.
.main-navigation .dropdown-toggle:after,
.main-navigation .menu-item-has-children > a:after,
.main-navigation .page_item_has_children > a:after,
.entry-breadcrumbs a:after, .author-link:after,
#cancel-comment-reply-link:before,
.custom-header-media .wp-custom-header-video-play:before,
.custom-header-media .wp-custom-header-video-pause:before,
.post-navigation .nav-previous .nav-subtitle:before,
.post-navigation .nav-next .nav-subtitle:after,
.entry-footer .cat-links::before,
.entry-footer .tags-links::before,
.comment-metadata > a:before,
.services-section .post-thumbnail a:after,
.team-section .post-thumbnail a:after,
.header-top-left-content li span .mobile-hours:before {
font-family: 'FontAwesome' !important;
}
Feel free if you have any other theme-related queries.
Regards,
Sujapati