Create site for users with private data

Hello everyone!

I’m creating a site with some particular features, using Elementor and Ultimate Member plugins, but have some features issues, and at this point I can’t belive than this be so hard to acchieve, so I decide yo ask the community for help and ideas.

I’m open to rebuild the site.

I need to create a site with this features:

• Allow user registration
• The users can’t access the wp-admin back end
• The users can add information, creating some post or custom post items.
• This items must be editable for the owner user.
• The user must can see only his own post/content.

I’ve try to set permissions with the user rol feature of the ultimate member, but the elementor post feature shows all the post, and I don’t know what to do.

There’s some idea? Thanks in advance!

The page I need help with: [log in to see the link]