API Settings to upload larger size images to Google Merchant Center

[Tymofii]

Hello everyone!

There was such a problem.
Now I start working with Google Merchant Center. All products were pulled into the feed of the Google Merchant Center, but after this, they do not go further into work, since the image that is pulled automatically up by API is too small - 76x102, instead of 250x250.
Independent searches have yielded no result. Can you please tell me where and what settings on Shopify do I need to change so that images with a size of 250x250 are automatically pulled up by API?