404 Page Not Found HELP ME

I created mybb forum.The topic is failing when I create it.If i create topic, the site redirecting to Suspected phishing site | Cloudflare page.

''404 Page Not Found

The page you were looking for could not be found! If you entered the URL manually, please double check what you’ve entered. If you clicked a button, please click the back button in your browser.‘’

I’m sorry to hear your website is redirecting, best of luck in solving it. Is there any particular reason you’ve posted it here rather than asking it on the MyBB forums?

Please ensure that mod rewrite is working or that the url is correct.

could we get a url to the site tho? It could help us debug the issue for you