The connection to our demo.creativethemes.com server didn't worked.

The connection to our demo.creativethemes.com server didn’t worked. This connection is required for importing the starter sites from our demo content server. All you have to do is to contact your hosting provider and ask them to allow list our demo server address.

I have the problem above, does this have any effect on using Cloudflare?

请问你这个问题解决了吗?