FAQ - We're Here to Help
Why can't I request SSL certificates from Let's Encrypt?
Let's Encrypt uses one of several ACME protocol challenges to validate that your device controls its domain. When you request a certificate, a conforming ACME server will attempt to connect to the device on port 80 or 443. The device must accept the connection on either port.
For details on related error messages on the myQNAPcloud dashboard, see What should I do if "My DDNS/myQNAPcloud Portal" displays an error message?.
For details on requesting certificates, see the Let's Encrypt User Guide.
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