Hello, @marvin,
I have just checked your provided URL and it is asking for the Login: https://postimg.cc/dZZNyPTR
Could you please share the URL of the page having this issue and also if possible, please share your site WP Admin URL and Credentials with me in the private content area of this topic, so that I’ll check it for you on your site and help you out further?
Regards 8Themes Team.