Even my old programme won't allow me to make people have children before they are 10 or so.
All I can suppose is that this is willful ignorance.
Isabel has son John, before she is even conceived. It's a miracle - except of course there never have been any.
Whoever is in charge of this please de-link these people.
Obviously everyone had two parents, but the default position in any serious form of genealogy is unknown.
No matter how much you desperately want to know.
Donald, you know (or can easily find out) who'se in charge of this profile. Send them a message. A public discussion will probably not help much.