@hoodad thank you for your question.
You may need check if you set your domain correctly in configurations files located at uvdesk/config/packages/ folder.
check if you set correctly the site_url that should be likesite_url: helpdesk.yourdomain.ext
Should not have any http before as showed in the example.
Be sure also to have cleared the cache.
Let me know if you was able to resolve, if not we need wait a reply from the UVdesk staff 😊