Thanks for posting this its been fun exploring it.
Started with my paternal grandmother and they had problems initially which is not surprising as her mother was adopted so you need to know the change of name.
Her husband was a bit easier and it took me to his grandfather as his grave is on findagrave. Yes they got it right and all his details

. Also some American women's rights person in the 19th century is my x times cousin

Then tried my maternal grandmother and found her and apparently she is related to "Jack London" the author
Finally tried my paternal grandfather. Eventually found him, they have him married to the wrong woman. They do say that via one of his ancestors a long way back i can trace a connection to Andrew Jackson US President but given they can not get his wife right I'll take that with a pinch of salt.
My overall opinion is, it is a bit of fun but they should have a facility whereby you can tell them when they have got something demonstrably wrong.
Oh and I don't like that you have to sign up for it, i didn't bother to find out the cost
