Where did you download the port from? If you downloaded it from the play store, please download it from there.

The only other place the Android version is available is from starcatcher.us. You can see the list of previous versions in this forum post: https://powdertoy.co.uk/Discussions/Thread/View.html?Thread=20392

But please use the play store, it will auto update for you. I also don't always upload new releases to starcatcher.us quick enough.