Oh gosh, I really wouldn’t know. That’s a geni customer support question. Did you look at https://www.geni.com/sso/zendesk/login?return_to=http%3A%2F%2Fhelp.geni.com?
page 248 shows sister Dorothy Smith married Thomas Jennings of Dunmow.
Geni has similar set up here with a different Dorothy Smith:
So we should look at this more carefully.