My suggestion would be to: 1. Add another button with the exact words they are pasting in their email. This will probably un-block you immediately. 2. Upload

My suggestion would be to: 1. Add another button with the exact words they are pasting in their email. This will probably un-block you immediately. 2. Upload your apk to Fdroid and give users the option to use that instead of play store. This will take care of any sudden rejections. People will still be able to install your app.