404 error showing after configuring the CDN website showing offline

Hello, my WordPress website is showing 404 not found after activating the CDN on site
sometimes the website work, and sometimes shows 404 error. kindly let me know about the configurations what i am doing wrong.

here is site link ( viveprinting.ie )

I’d contact your domain registrar and find out if there are any issues with the nameserver change. Site loads for me and shows as active on your dash, but it appears nameserver propagation is ongoing