Facebook auto post plugin

Most sharing plugins (not auto-publish ones) use the OpenGraph Meta tags. There is a plugin that adds the correct Opengraph Metatags for PremiumPress themes:
https://premiumwebservices.co.uk/shop/premiumpress-plugins/facebook-meta-for-premiumpress/

The problem with the auto-post plugins is that these use different method and don’t support images as customfields (which PremiumPress themes use).

I am looking in possible ways to make the auto-post plugins to work. (but if I can’t, I would have to possibly come up with my own auto-post plugin).