Thanks John
Best answer by Keith N
Thanks for posting. Here is a link to an article that walks through the process of setting up the skill along with getting Amazon Alexa working with Sonos. From what you are describing it doesn't seem to be a problem with your Sonos account as you can log into that no problem.
You can also give us a call to have someone walk through the process with you over the phone. We'd be happy to help.