Hello @leonfeijen
Unfortunately, it’s difficult to say what the issue is without a link to the site in question. This issue could be a JS conflict with another script on the site. It could be a theme or plugin-specific CSS override causing issues.
First, we recommend installing something like the WordPress Health Check Plugin and follow their instructions on how to safely disable plugins and revert to a default theme.
If you can edit your question above, we would recommend adding your website URL into the public URL field so that we may see the site in question. Once we are able to review the frontend of the site, we should be able to tell you what the root cause is.
Hopefully using one of the above methods we’re able to help resolve the issue. Should you have any further questions, clarifications, or details please reply back to this thread and we can assist further. Have a wonderful rest of your week!
