CDN wordpress

Hello, I want to implement CDN in my wordpress website. With the CDN i want to deliver photos, css and also javascript.

My problem is, as soon as the CDN is starting to work, I get tons of errors from my pictures because they are not found.

I want to know the steps and the procedure I have to do in order to get things right from the start.

Thank you very much.
Have a nice day.

What’s the domain?

What’s the exact error?

The domain is mobiro.ro

And the error is after the CDN is active my product pictures disappear. And I think it’s because there is no picture uploaded to Cloudflare, and I don’t know why there isn’t an auto-upload for them.