Trying to edit posts redirects me to weird page

Hello.

First of all, I just want to say that your Page Builder plugin is truly a great one, really helpful!

Recently, I’m experiencing some issues with it. When activated, I’m not able to edit posts/pages anymore, it just redirects me as shown in the following screenshot: http://imgur.com/a/Rq5O5

Upon disabling the Page Builder plugin, clicking on a post in the dashboard sends me to the visual editor, as expected.

Any idea what’s causing this?

Thanks a bunch,
Razvan