Actually, as a paid Sellathon subscriber, I can vouch for the fact that Sellathon is still collecting data, even when my counter doesn't show up in my ads. I can still go to Sellathon to check my counter stats (although this doesn't help the users who only use the free counter).
Since the counter loads directly from Sellathon, I think this is an issue that Auctiva needs to bring up with them.