Is this a DNS problem?

My www and non-www a different website,
WWW site is very unstable, please administrator to see if my DNS is a problem.

What’s the domain?
Sometimes parse to is not my website.

That site is working fine from here. When did you add the domain to the account? If it’s less than three days ago, you may need to wait for DNS to propagate.

Just three days, I was waiting for the next try. Thank you!