They have online chat support, so I tried that. I got routed to a sales rep who called me on the phone and who, after taking all my information while basically ignoring my question, finally heard me. She didn't know the answer.
She sent me a support link which was the same one that routed me to her. I told her this and all she could say was she was sorry and she couldn't help unless I was ready to launch a campaign.
I honestly don't think she knew anything. I'm suspicious that these are indy workers getting routed prospects by Google. I don't know. The whole thing was sleazy.
Years ago when I managed to get someone on the line she stayed with me until my problem was solved. And this wasn't even a problem (or maybe it was? wouldn't be the first bug I found on their site). I was just asking a question.