Hello, @marvin,
Sorry for the inconvenience but can you please share your site WP-ADMIN Login details in the below-listed format in the private content area of this topic on which you are facing the issue so that we’ll check and assist you accordingly? For now your site is on Maintainance Mode and I am not able to check it.
WP Admin URL:
WP Admin Username:
WP Admin Password:
Note: Kindly take a complete backup of your site first.
Regards 8Themes Team.