Schema Error – ‘Thing’ no longer supported

Lately google has made some changes to Schema and now when testing the page with the structured data testing tool it returns this error:
Thing is not a known valid target type for the itemReviewed property.

I changed ‘Thing’ to ‘Product’ but now it returns this error:
One of offers or review or aggregateRating should be provided.

…along with these warnings:

The brand field is recommended. Please provide a value if available.
The description field is recommended. Please provide a value if available.
The image field is recommended. Please provide a value if available.
The sku field is recommended. Please provide a value if available.

Could you please update the plugin to comply with the new standards?

In the meantime, anyone has a suggestion how to fix the error?