I feel like recently the Fun Zone has been a confusing aspect of Bananatic so I thought I might explain it more here.
First off, to earn bananas in the fun zone you must play the games (I have found 2025 or whatever it is called to be one of the best), and watch the advertisements that appear completely.
After you are done played there is a timer at the top right corner of the Fun Zone. When this timer resets you should be awarded your bananas. If you are not rewarded within a few days please file a support ticket or contact Bananatic at our social media pages.
Leave any further questions below! Hope this helps!