骗钱的吗？
我之前花了$30刀左右，为什么无法恢复购买。说我之前账号没有购买过。。
Bad quality
I spent $30 on this app after trying out the first course. The design is attractive. You'll love their cartoons and the program design. However after using for another 3-4 courses, I found it doesn't work properly. Most of the time, you have to wait 3-4 seconds for responses. The most unbearable part is that it would lost sounds after using for about 5 minutes. I need to kill and reboot to get the sound back. The development team should pay more attention on their app's quality.
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Response from developer
您好， 1.关于学习一段时间后，性能会变差，响应变得迟顿问题，我们在新版本中性能已经做了很大的提升，请您更新最新版本使用； 2.关于在性能轻差的设备上，运行一段时间后，应用声音会消失的问题，我们在新的版本已经解决，请留意升级新版本； 3. 非常感谢您对我们产品的支持，和您对我们提出的宝贵意见，谢谢~
