Why isn't my domain registering after multiple purchases on Shopify?

Hi,
I have problem with domain, i bought a domain on shopify and it took the money and i didint get it, so i bought it again and again i didint get it and an error popped up
An error occured while registering

Hi @layer1

Thank you for reaching out about this. I understand you had some issues purchasing a domain. If a domain purchase appears to go through but is then cancelled shortly afterwards, this usually means that there was a verification issue with the payment attempt.

I recommend contacting our authenticated support team so that they can review the attempted purchases and assist you further.To access our authenticated support, please follow this link: Shopify Help Center. Alternatively, you can also purchase the domain from a third party domain host and then point the domain to Shopify. You can learn more about connecting a third party domain here: Connecting a third-party domain to Shopify.