As I'm new into servers but really interested, I have decided to set up VPS on external hosting(in my case Contabo) and host my own email/website there. I have watched a youtube tutorial(This one on how to do it. I have set up everything through tinyCP as it is in the tutorial and everything is working except when I send a test email to https://dkimvalidator.com/ it states that the email is not dkim signed. I went through many topics with the same problem and tried many solutions but nothing worked.
I have added all the DNS records in CloudFlare as they should be(also as in the video) and confirmed them within tinyCP(they are recognized).

Unfortunately, I'm always getting the same result:

I have added all the DNS records in CloudFlare as they should be(also as in the video) and confirmed them within tinyCP(they are recognized).

Unfortunately, I'm always getting the same result:
