AWS EC2 + Cloudflare

Hello!

I have created an EC2 instance on AWS and pointed my domain with Cloudflare to it. But now I keep getting this error:

Error 522

Connection timed out

Browser: working
Cloudflare: working
Host: Error

I am very new to this, but I understand that the error comes from the EC2 instance. However, can anyone explain to me why is this happening and how could I fix it please?

Thank you very much!

Please have a read here:

This explains why Errors like 522 are happening. Also this is not fixable from Cloudflare-Side but you have to configurate your EC2 to accept TCP connections from Cloudflare

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