Shopify Custom accounts domain DNS is invalid

The domain ‘.store’ was bought through shopify, I setup the customer account URL in shopify settings to use ‘account.storename.store’ and added the domain. This was a couple of days ago and it looked good. Now it shows as invalid. So, I deleted it again and tried to set it up again. As this is done through shopify, I have no access to the domain provider themselves (Name dot inc or whatever). So, how am I to make the domain setting changes that are suggested by shopify help centre?

HI! This article might have the information you need. It gives some more specific details for use of a Shopify domain, rather than a third-party domain.

https://help.shopify.com/en/manual/domains/managing-domains/edit-dns-settings

No, this link provides nothing I can use. You just cannot seem to edit DNS settings if the domain was supplied via shopify. For one, I do not even have the option to ‘edit DNS settings’ under ‘Domain settings’. The only option I have is to delete the subdomain

Hi,

Then how am I supposed to get the customer account domain working? Is there a support email I can use?

Regards,
Shaun