Why has the design of my blog changed?
BlogFeeder has no way to import the design of your blog when importing to your Shopify store. BlogFeeder only imports the content of your posts to allow for a more seamless design consistent with the rest of your Shopify store.
In order to change the appearance and stylize your Shopify blog, edits would need to be made to your Shopify theme. If you do not feel comfortable in making these adjustments, you could reach out to a designer who could work with you directly to get your Shopify blog to match more closely with your imported blog.