A number of users report that when they try to add an advert it does not work.
I have confirmed that for some people this is indeed the case and have corrected a typo in the dashboard file.
Some people reported that the auto height was not applied properly. This has also been fixed.
If you re-download the plugin it will work immediately. You can download the files and manually overwrite them using your favorite (s)FTP client and doing so don’t even have to disable the plugin. Just overwrite the files and reload the page.
Sorry for the inconvenience!