Buildings have changed into white boxes

SimCity BuildIt remains available in the game store despite its incompatibility with iOS devices because app stores often maintain listings for popular games to preserve user access to information, updates, and community features. The game may still be supported on other platforms, such as Android, or older iOS versions, and the listing allows existing users to reinstall or update the game if their device supports it. Additionally, developers might be working on updates to restore compatibility or provide alternative versions. Removing the game entirely could disrupt the user base and diminish the game's visibility, so stores often keep such apps accessible while compatibility issues are addressed or until a formal discontinuation is announced.
Because a game is listed in the store doesn’t guarantee compatibility.