Confirmed. That's a pretty nervy thing to do and makes the plugin here just an advertisement for the commercial version. This one is awfully close to "not working".
The page does include this verbiage but come on.
In this version of Auto Image Resizer some features are not available. You will find notices on several places in the backend that the descripted feature is part of the Pro Version.
As a general rule: For plugin issues please send an email to plugins AT wordpress . org with details about what the issue is. I suggest you send one with an explanation and refer to this post.