App partly works, it blocks purchases of quantities more than you nominated maximum but does not stop buyers from going back to the same item again and again and adding the maximum to the order. Developer had not considered this, and after a week have still not fixed it. And we have had to pay for an app that does not work as intended,

Edit - I originally gave this app 1 star. The devs of this app have worked hard to fix the issue I had (see below) and have sent me proof that they have fixed it. Well done guys! I wish you every success with your app.

This app is ok, but the result of installing it is terrible. The code that the app puts on the website is thought by Google to be malicious code. Hence Google shut down all my ads and sales plummeted. Extremely angry about this. App Devs have no idea what is causing it or how to fix it.