translation of URLs in NextGen-Gallery

Hi,
is it possible to translate the URL of a NextGen-Gallery with Polylang? And how can I do it? Or do I need Polylang Pro for this feature? The support of imagely wrote: “NextGen doesn’t currently support multiple selection fields for the pages for the same gallery in Manage Galleries”. So they could not help me. The translation of the gallery-texts for the album-list worked fine.

Best regards, Susanne