plugin breaks the theme | WordPress.org

At the moment, I had to uninstall the plugin due to this error.
When the user logs in, they have access to the menu in the page header and the user portal. Without the plugin, this access occurs as provided. With the plugin, instead of opening the user portal, the page loaded is the login form, as if the user was not logged in. If the page is reloaded, the user portal is loaded.

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

 

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