Fixed conditional check

Fixed check to see whether variables have values
Fixed user data retrieval

Corrected user data retrieval to first determine user ID, and then call
user profile and metadata in a single array.
Fixed assignment of user data from profile

Fixed the assignment of user’s display name and bio from their profile
using the new data retrieval calls.
Removed description from meta box

Removed the descriptive text from the meta box as it appeared
unnecessary.
Cleaned up meta box layout

Cleaned up the HTML for the meta box to better match standard
conventions for meta boxes.