So, I've recently switched a Magento store from using XML feeds to using the Google Content API. I've installed the official Magento extension which is being used to feed the API.
Almost all products have been added succesfully. I'm left with 35 products which are not being added to Google Shopping, without any reason whatsoever. The products are all in stock, are visible in catalog and search and are active. They have also been added to the proper store and website and are assigned to a category. The module also throws no errors.
What would be the proper way to fix this?