Hello, @Marek,
Could you please elaborate on your issue with the help of a video for a better reference to understand your issue and please share your site wp-admin URL and access in the private content area of this topic by following the below-given format?
WORDPRESS ADMIN URL:
WORDPRESS ADMIN USERNAME:
WORDPRESS ADMIN PASSWORD:
So that I will check and fix your issue on your site.
Note: Please take a complete backup of your site first and allow us to debug your site and change/remove the plugins to solve your issues.
Regards 8Themes Team.