Joomlistings Fix

We are looking for someone who can repair our purchased component Joomlistings for a Joomla 2.5 installation to ensure the component works correctly. We will require list of files repaired to ensure our ability to use this component on other sites. Details of fixes required include repair of an issue regarding selection of "sections" when attempting to add a new listing, as well as repairing the ability to choose a parent category when adding a new category. Both of these items "should" work, however they will not. It would appear this fix would be a simple to fix for Joomla coding experts. Attempts to contact the developer have failed leaving us no option but to hire someone to fix this component. We are willing to provide admin access, ftp access and anything else required for completion of this assignment.