The difference between the standard and developer license is that the developer license includes the Photoshop .psd files and the standard license does not. You can definitely still create a child theme and make modifications to the theme even with a standard license, and the theme is not encrypted regardless of license type.
Our themes can be translated into any language, with further information and instructions on our
languages page. JobRoller does not currently have a German translation file already available as you can see from the
JobRoller language packs page, so this means if you were to create this yourself and were willing to send this to us, you'd be welcome to apply for the translator discount of 40% off your theme purchase.
Currently our themes are not responsive, however we are aiming to make all themes responsive by the end of the year.
AppThemes does not officially support third party plugins, so we cannot guarantee that such plugins will be 100% compatible with our themes. Thanks.