For buildbox 2.3.10 apps, Google says that; Warnings Your app currently targets API level 28 and must target at least API level 29 to ensure it is built on the latest APIs optimized for security and performance. From August 2020, new apps must target at least Android 10 (API level 29). From November 2020, app updates must target Android 10 (API level 29).
On the top of the build.gradle (app) file in the exported project update the version like this: Code: android { compileSdkVersion 29 buildToolsVersion "28.0.3" defaultConfig { applicationId "com.cabagomez.laberinto" minSdkVersion 16 targetSdkVersion 29 multiDexEnabled true I have not uploaded my game update yet, but it builds as expected.