I have encountered two similar problems. First, my uncle shows up only as husband of aunt, and that of course makes so many other relationships wrong. Now, rather than being a first cousin, the person is a nephew of husband of wife.
The second one is weird. I have a great grandmother. Her husband, parents, children etc all show as "no know relationship"
What on earth is happening,or, more than likely, what the he-- am I doing wrong?
Right now, I have a lot of people in my tree that aren't related to me!