My Site Cloudflare configuration issue

i have changes my site nameserver from my own cloudflare to another cloudflare, but my site stopped working after that … i receive DNS resolution error on my domain … How to fix this ?

My Domain -

I suspect the DNS records in the new account are not correct. They should match all the DNS records where your site is hosted. There’s also no DNS record for ‘www’. You probably don’t generally use that, but it needs to exist and then forward to the naked domain.