Website is down after updating nameserver

Hello please I need help
Our current website is connected to the previous dev Cloudflare account and i decided to create a new one and connect our website to have full control. However, after updating the nameserver the website goes down and i try to revert back to the old name server but the site is not working anymore, can someone give me advice, please? The website is peak.hk thank you!

Greetings,

Thank you for asking.

I am sorry to hear you are experiencing an issue with your domain/website while using Cloudflare.

May I ask you to post and share your domain name in bracketed dot [.] notation here with us so we could double-check, troubleshoot and provide some feedback information? :thinking:

What error do you see? Can you share a screenshot of it?

Before moving to Cloudflare, was your Website working over HTTPS connection?

Furthermore, if you recently changed your domain nameservers, regular DNS propagation time usually takes up to 24-48 hours to complete.

May I ask have you tried using a different Web browser, or tried clearing your Web browser cache?
How about using a Private window (Incognito mode) or a VPN connection if possible?
Is it the same behaviour on your mobile phone (4G LTE, mobile data, cellular)?

May I ask, if you know was the DNSSEC active and enabled for your domain name at your Domain Registrar, before switching domain nameservers to the given Cloudflare nameservers of your Cloudflare account?

Hey, thanks for the quick response. the site is [peak.hk] and i try to access it in a different browser the site is back online again thank you.

My concern is we need to add CNAME to our domain, can we create a new account add cname and update the name server? or what is the best way to do it without affecting our site?

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