Try restarting the app, or delete the app and re download. If it still does not work the it will be best to email the developers at: Support@athinkingape.com State your username and game and Be very clear with what your problem is. It may also help to add a screenshot as picture proof Hope it is resolved quickly for you!
You can't access the oracle if you're playing on a cloned app or if you are on droid and uninstalled Google Play Services.
It's gonna be one of these two things. Hope it gets resolved for you. Support is the best place to get help if it doesn't get resolved with those answers.