Featured image is missing after 1.3 update

Hi there, I saw the plugin wasn’t 100% compatible with WordPress 4.6.1 but I gave it a try (on localhost) and it kind of works. The only thing missing (in my case) is the pages thumbnail (featured image). Any hack around to fix this issue? I guess I could just insert the thumbnail in the post instead of as the featured image but I’d need to change the css a little. Or if you say the previous plugin version is secure I could just leave it to 1.2?

Thanks!