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I'm too seeing some very large drops in downloads on certain days. F.e. yesterday and today, our downloads are only 10% from the normal downloads. We have about 400-500 downloads per day. We had this a month ago over three days and Amazon team didn't saw any problems, but I'm sure there are problems. As for support : nobody is answering support emails anymore. Some month ago support emails got answered within 24h - now nothing. I wonder whats going on and if I can trust Amazon for our further app submission.