If you have the same content on several pages with different URLs, one of these pages should be designated as "canonical," meaning it should contain the tag rеl="canonical." Search engines will take it as a signal to treat this page as authoritative and disregard the duplicate pages.
Any website made on Tilda has a service address that looks like this: http://project12345255.tilda.ws
. When you connect your own domain (http://mysite.com
) and publish all pages, your domain will automatically become the main URL (it acquires the rеl="canonical" link). A service address can still be displayed in your browser but search engines will ignore it—unlike the canonical page with a custom domain.
You don't need to do anything else.
SEO specialists, this is for you: to edit the canonical URL, go to the Page Settings → Facebook and SEO → Customize search resutls preview. There you may add a canonical URL to the page.