It seems I have the same issue as haspend. I have an LG K20 V, android 7.0, castle story version 2.3.1g. Kingdom name: Miron Manor. Every time I try to buy wall to do "The Royal Scholar" goal it freezes. I tried buying wall, gates, and towers and it freezes every time. I can move it to where I want it on the map but once I hit 'buy' it freezes. Please help, thanks.