I am having the same issue. The response to this post says to use the Control # in the shaded top right of the 1099B form and it starts with a C, but there is no shaded area. I see Computershare's Federal ID # as well as my Account #, but when trying either of those, it does not work. And neither of them start with a C.
To the original poster - did you find the answer? Could you please share, if so?
