As in earlier responses jD Custom Fields are replaced by Joomla field in the jD 3.9 series.
jD3.2 has poor language support compared to modern requiements - all our efforts are now on jD3.9 which is in beta release. This has extensive multilingual support. To get some idea pleasehttp://www.jdownloads.net/documentation-for-v3-9-beta/language-related/associations-multilingual-support
Best wishesColinPS I need to check our RTL languages but hamperered by not knowing any RTL language itself!