You are uploading an APK via the managed iFrame, the APK uploads successfully. You go to the managed Play Store, the next day, to begin the app distribution process only to find the app removed from the store. What would be the reason for this?

The most likely reason for an app being removed from the managed Play Store after a successful upload is that Google Play Protect identified it as a Potentially Harmful Application (PHA). Google Play Protect automatically scans uploaded apps for malware, privacy violations, and other security risks. If a threat is detected, the app will be removed to protect users. Incorrect options: An unsigned APK would fail the upload process immediately, not be removed the next day. An incorrect application ID would also cause an immediate upload failure or prevent the app from being recognized as an update to an existing app. While there are file size limits, exceeding them would result in an upload failure, not a removal after successful upload.