The Dynamic Multi-Level Fields plugin has been updated to version 1.3.3. The new version of ClassiPress has a couple of bug fixes as well as a couple of new improvements. Single quotes are now supported, and the problem with edited ads not saving properly has been fixed. This new version introduces caching of category counts for faster page loading, and a bulk delete option. Please use "My Account" page to download the latest version of Dynamic Multi-Level Fields plugin.
Thanks to @Fanatic for helping with the testing.