I had the same issue. I clicked the verification link, but it redirected me to the main site and I still have "You cannot create any emails yet because you have not verified any email addresses".

Later I noticed I have to go to "email addresses" and "check verification status". You'll probably lose some people at this step, since I hadn't expected to need to do that.

Also in "my campaigns" it says "Click on the campaign name to expand" but actually you have to click on the arrow at the end of the row.