Underlaps my site theme

Hi can you tell me how to fix this please: https://i.imgur.com/mHB2VSL.jpg

it shows below my site theme, another theme it works fine but I use this one and so I want it to work on this please.

Also how can I make it so that favourites and lists are made by user only and it’s stored on there profile and not shown in public to everyone? thanks ??