Samurai Persistence

Hello, I have a question. I installed the game, but when building in the castle, I can't build the Coral Sanctuary, and instead of the Mage Guild, there's just a white square. Unfortunately, I can't upload a photo because it exceeds the size limit.

I found the root of your problem. I'll say right away that the problem looks critical, but it's not that bad.

You can't upgrade the Coral Sanctuary not because it's bugged, but because it's forbidden on the map, and another building upgrade, which was added in Armageddon's Blade, is also bugging out.