When I changed the nameserver, I faced a problem.
As a visitor - showing this page.
And as a developer - It`s a 404 error.
So, how can I solve this problem?
And as a developer - It`s a 404 error.
May I ask what is your domain name?
Was it a recent change or?
Before moving to Cloudflare, was your Website working over HTTPS connection?
Seems to me at first sight, it could be a local DNS cache/issue, but …
Sure, it asks for login.
Meaning when you are logged in?
Can you post a screenshot of this 404 error?
Does it come from Cloudflare, or rather from your origin host / server, web application? (due to misconfigured route path / rewrite location)
- do you see it in your access/error log file at your origin host / server?
From the above screenshot you posted, I am afraid that error comes straight from your web app / web server and not from Cloudflare.
May I ask, do you also see some errors/wranings in the Developer Console (F12) of your Web browser when you “log in”?
No brother, I`m tried to log in with my admin ID. But it not allow me
Okay, let’s try to troubleshoot something.
Couly you please temporary switch from 
to 
(DNS-only) into your DNS tab for A shop-ipj.com and A www, or click on the Pause Cloudflare for this Site option from the Cloudflare dashboard (Home tab) → scroll down a bit to find this option?
Wait for few minutes and then try to log into your web app to see if there will be any difference - will there be the same error 404 or not.
Furthermore, are you using some custom-made Page Rules at Cloudflare for your domain name?
Okay trying…
Seems like your Website wasn’t working over HTTPS properly.
Well, that’s the 404 error comming straight from the origin - cPanel hosting.
It redirects to /wp-admin over HTTP (port 80) - is the path existing and wp-admin directory located inside your public_html directory?
May I ask what SSL option have you got selected under the SSL/TLS tab at Cloudflare dashboard for your domain ( Flexible, Full, Full Strict … )?
Are you using cPanel AutoSSL certificate? Is it still a valid one?
Or rather the Cloudflare Origin CA Certificate?
That was a WordPress plugin SSL
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Possibly, yes, but why is it redirecting to HTTP, rather than HTTPS?
Is your WordPress admin working and accesible over the SSL?
I would firstly recommend you to secure your origin host / server.
Therefore, make sure you have got a valid SSL certificate and that it is properly installed at your origin host / server.
Here is a way to re-check if you correctly setup the SSL for your domain with Cloudflare:
Kindly have a look here for more information regarding correct SSL settings:
Meaning, the security on your domain/website is broken and not working properly so far (or some rewrites wrongly configured).
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Thank you.
I already told it to Namecheap. And now waiting for there work
This is my admin panel
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