I could not access Google Now on my account anywhere on my devices. It just didn't work. I tried to remove Google Search app data, cache, even tried to reinstall the app and whole system.
Fortunately, it's not the problem. You don't have to delete any of your data. If you're having this issue, there's an easy fix for that.
- Open Google Settings app from your drawer.
- Open the account history tab.
- Turn everything OFF.
- Wait a few minutes and then turn it back ON.
- That's all! Your Google Now should be setup properly now.