Board Thread:Plants vs. Zombies 2: It's About Time/@comment-24508466-20141102232720/@comment-25660457-20141204124352

I remembered someone provided a link for the 3.1.1 apk.

This is the link:https://mega.co.nz/#!dtJ1AIZa!T78LqTJ17_lylnkbr7oCD8qNOk-3DzmNFpBro5yfbk8

Try it, it worked for me, and so it should work for you.