Hello,
Please help to update your supported domain extensions. Our country just added some third-level domain like .id.vn, .io.vn. They are not subdomain and please help to update to support these extensions.
They are also listed in the publicsuffix dot .org → /list/public_suffix_list.dat
Thank you!
Their inclusion in the Public Suffix List means that they will be available once the updated PSL makes its way into Cloudflare. I don’t have any insight as to when that will occur.
Noted with thanks!
Finally it works. Thank Cloudflare Team!
Thanks for sharing the news here. 
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