question

Hello, anyone else seeing a continuing drop in sales over the last 4-5 months? We dropped by over 80% since November 2014. Before that, we had constant sales since starting the app. If this will go on, we can remove the app from the store because it doesn't generate any sales. I thought Amazon is better in revenue for a long time. But it seems something is going wrong here. I know that sales can differ from month to month but not this continuing drop. The most interesting part is that our app is in the same sales rank than before the drop. Also, we are in the top 10-20 on some categories. This position also didn't change since the drop. So why is there a drop in sales? I would be happy if someone from Amazon would answer to this! Thanks!