Issues with "content" panel in e-newsletter plugin

Hi, greatings from Brazil! After install the e-newsletter plugin, I see that issue with "content" panel, in "Create" or "Edit" a news. The content panel colapse to the left, and is impossible see the options. I try in Firefox, Chrome and Safari, and do the same in all browsers... Deactivate all the others plugins and nothing change. On the next day 30 my membership expire. If the first plugin have problems like that, why I renew my membership?

Wait an answer quickly, oK!