Google Structured data issues

Hi, Google webmaster tools is pointing out issues when I use the plugin.

The 1st issue is the one with the time durations. ‘min’ is not an acceptable value for the ISO8601 duration format, but I can work around that.

The more pressing issue is that the plugin seems to be treating the entire webpage in a ‘google-schema/blog’ which google does not seem to like.

Also, the featured image does not show up on the recipe card.

Anyone else seeing this? Would appreciate some help here. Thanks.

https://ww.wp.xz.cn/plugins/recipe-card/