Moved to a new (to me) house with Rachio model 8ZULW-B controller. I know nothing about it and while the sprinklers work, I need to learn how to operate the system. Looked for owner manual on the website but didn’t find it. Where are they? Also, I see others talking about having moved finding what is now their system still registered to the previous owner. That’s likely my situation; how do I change it? I attempted to create an account providing all the requested information and when I hit enter, nothing happened.