Currently we do not support Pro version and stopped the development. Pro version currently doesn't translate new content if you do not use Google Translate API key, which is not cheap.
We recommend upgrading your Pro to one of our 3 new plans: https://gtranslate.io/#pricing
The translated cache in Pro version is structured to be one file per translated string. If you have a lot of content or you have random generated keywords it may cause issues, since file count is limited in many hostings.