You can't invite a user to share genomes from their profile page if any of the following is true:
- You're already sharing genomes with the account that the profile is associated with
- You have a pending sharing invitation to or from that profile
- That individual has chosen not to receive genome sharing invitations
- That individual's profile name isn't publicly visible or searchable, and only the Community-related portion of their profile is visible.
If the user in question has a visible Community profile but isn't searchable, you can send them a message from their profile page and ask them to make themselves searchable. You can also invite them to share genomes using their email address from the genome sharing management page.