Hello,
thank you very much for your reply and feedback! This is very important for us and we always try to make our product better!
As you told us, we don't have any explanation, how everything works, we added a section to our FAQ, where everything is explained.
According to cloudflare: We use Cloudflare, because we want our customers to always have a good expierience on our website and always have a fast loading webite, if they visit us. Cloudflare also provides a good DDOS protection. We don't want downtimes because others perform DDOS attacks to us.
We hope, we could answer all your questions and hope to see you as our customer