Checkout url is not using my custom domain

[dhelpwithshop]

When someone goes to checkout from my shopify store customsonggift.com

the checkout url is https://a83a11-a0.myshopify.com/checkouts/co

How do I get the a83a11-a0.myshopify.com to change to my primary domain of customsonggift.com

I don't want the checkout url to be a83a11-a0.myshopify.com

My domain is hosted at hostinger and apparently it's a headless domain (whatever that means)

[SealSubs-Roan]

Hi @dhelpwithshop !

This issue is mostly coming from your domain. You might want to reach out to your domain provider to check if there are any disruption on your DNS records that is causing this issue. If no issues are found, you can also reach out to Shopify support team so their technical team can further investigate the issue and guide you with the next steps. You can reach out to them by going through their Shopify Help Center and enter your concern on AI chat box, respond to it until the "I still need help" or "chat with a support advisor" option appear.