I am trying to create some fixed interval schedules in Chrome 58. I am unable to unselect Zones to water. Also the next button flips to the top of the page. If you click the bottom right it will advance. But not being able to select zones is a kind of a deal breaker…
See this thread - Web app/IOS app not functioning the same
It appears that they know about it and are working on it. While it’s getting fixed, your phone app should work.