Error 200

A 200 is a normal response.

What redirect have you created?

Error:
Check redirect for: https://www.auzcan.com/
Expected: 308 to https://auzcan.com

Agent: Not using Redirection

The redirect created by me.

Source url: https://www.auzcan.com
Match: URL Only
When Matched: URL Only with http code – 308 – Permanent Redirect
Target URL: https://auzcan.com
Group: Redirections Position:2

Can you post a screenshot? The plugin won’t create a URL only with an absolute URL.

Also, your site is cached, and this will need to be cleared.

Check here

That doesn’t contain any details. Can you edit the redirect you created and show that?

It may be easier to use https://redirection.me/support/site-options/ and remove www that way.

Your site is still cached and this will need to be cleared.

Updated Screenshot

Ok yeah, that is not a correct URL. You have created a redirect for https://auzcan.com/www.auzcan.com

You need to put a correct URL there. As I mentioned, it would be easier to use the Site page which will do this for you.

Also, your cache really will need to be cleared.

I have cleared the cache.
And I have created the alias for https://www.auzcan.com => https://auzcan.com

But the problem still persists.

You should change the canonical www setting, not an alias.

Your site still appears to be cached and it hasn’t been cleared. A HTTP header tells me how old the cache is.