I've had several problems, but have submitted questions to the support address.
One issue I'll mention here, because I've figured it out on my own, is the "Demographics" tab on the Profile. It asks about "ESM" -- which is left undefined. But then I saw that, when one refers to the Member Directory and views an individual entry, one of the first things displayed is the year one began researching. And it's blank if you don't enter a year on that last Profile page.
So, folks, don't neglect the "Demographics" part of your Profile, but just enter the year you first began your quest for ancestors. I'd already given that as part of my "Bio," but have now placed it where it was intended to go. One less problem to sort out!