Squarespace adds self-referencing URLs by default too. But, as is the situation with Shopify, you need to edit the code specifically if you want to insert a custom made canonical URL. Just bear in mind canonical tags are usually not a directive but rather a sign for search engines. Put https://vela-de-7-dias---branca74320.blog-a-story.com/8233609/considerations-to-know-about-hreflang-tags-wordpress