DNS Check unsuccessful on Github Pages Custom domain

[kinhchendev]

I made a website with Github Pages and deploy via Github Action, the default url is kinhchendev.github.io/kinhdev
Now I want to use a custom domain, so I buy the domain kinhdev.io.vn and set the following record

@ A 185.199.109.153
@ A 185.199.108.153
@ A 185.199.110.153
@ A 185.199.111.153
www CNAME kinhchendev.github.io

I also set TXT record to verify the domain, and it verified within 5 mins. To be sure, I use dig to check if the domain is point to Github Pages

; <<>> DiG 9.10.6 <<>> kinhdev.io.vn +nostats +nocomments +nocmd
;; global options: +cmd
;kinhdev.io.vn. IN A
kinhdev.io.vn. 472 IN A 185.199.109.153
kinhdev.io.vn. 472 IN A 185.199.111.153
kinhdev.io.vn. 472 IN A 185.199.108.153
kinhdev.io.vn. 472 IN A 185.199.110.153

After 24hours, I go to Pages setting and it still said DNS Check unsuccessful with error
"Both kinhdev.io.vn and its alternate name are improperly configured
Domain does not resolve to the GitHub Pages server"

It weird, when I go to kinhdev.io.vn, it shows my page without https, that mean the DNS is set. I don't know which steps is wrong here, should I wait for another day ?

[kinhchendev]

The problem is from the domain itself, I buy a new domain .info.vn. I did the above step and 2 minutes later it work perfectly.

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