Hi, we are facing the same issue, with the same email response: ITMS-90338: Non-public API usage - The app references non-public symbols in Frameworks/AmazonIVSPlayer.framework/AmazonIVSPlayer: _CMTimebaseCreateWithMasterClock. ... Builds from yesterday passed submission, but not today. AmazonIVSPlayer.framework is the same in both cases. many reports here