"No prezis found" after logging in

After logging in, my account states :"No prezis found". There should be quite a number. When I check my Account Settings, it states that I have a "PUBLIC ACCESS subscription". However, I switched to an educational account a while back.

One of my public presentations still appear to be online: http://prezi.com/uncooniogumn/?utm_ca...

How can I recover the prezis?