Hello, Lisa!
When a profile is listed as unconnected, that means it is not connected to the main tree. The profile can still have family connections, but those would also be unconnected profiles as relating to the main tree.
To connect a profile to the main tree, you need to connect that profile to another profile that is connected to the main tree.
You may need to add additional ancestors, descendants, or other relationships, such as siblings or spouses, to reach a currently connected profile.