Cannot create update feed to google shopping

I use the Product Feed PRO for WooCommerce plugin.
However, I am facing the problem that when creating a feed to post on Google Shopping, there is a problem:

• If I include product variations, there will be a lot of duplicate products. The product only has about 200 products, but when updating Google Shopping, there are more than 12,000 records on Google Shopping.
• If there are no variations, the product will not have a feed.
  So how should I handle this case? Please help.

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