Fetch details reads the name, picture, description and member count from the public preview page each platform publishes for a link. If it does not work:
- The invite may have been reset or revoked. Ask the owner for a fresh link.
- Your server may block outgoing HTTPS. Ask your host to allow it.
- The platform may have changed its preview page. Submitters can always type the name and upload a picture themselves, and we ship an update when a platform changes.