When you go to your home logged in page www.nauticed.org/my, click on the Resume Tab
Then at the top you will see where you can download your certificate.
RYA Day Skipper Certificate
If you are looking for your RYA Day Skipper theory passed certificate, look to the bottom of your resume page. Here is the support page for that: http://support.nauticed.org/solution/articles/44000583892-where-is-my-rya-day-skipper-theory-passed-certificate-
Under your resume tab above, you will see the reference to your SLC - that is as long as it has been awarded.
If you don't see it there, then there are still remaining requirements. Please go back to the My NauticEd button (top left) and look 2 buttons down below the curriculum button. There you will see the International Sailing License Button. Click that.