A custom Skill has been created without being published.
I am able to test it in Service Simulator.
When I try to add the skills to my device from the web portal (http://alexa.amazon.com/) or the Alexa app on my phone, the search get no result.
I have made sure the Alexa device (my raspberry pi) is using the same developer account. What step have I missed?
There is a bug, amazon is currently working on it. because of which you are unable to find your skill. The same thing happened to me. https://forums.developer.amazon.com/articles/30222/0628-issue-with-development-skills-not-showing-up.html