My suggestion is this (developers don’t like it, but some are cool with it). Whenever you see an app that comes in two or more versions (a free AND a Pro paid version) do NOT,
I repeat,
DO NOT upgrade using an in-app purchase. Download the free version just to test drive the app, and if you like it enough and want the full version, ALWAYS delete the free version and buy the Pro version separately. If you want to tranfer files between free and Pro, purchase the Pro separately, do the transfer, then delete the free version. But DO NOT PURCHASE AN IN-APP UPGRADE.

The reason is simple. You are allowed to share purchased apps (like Pro) on a family plan with family and friends, but you are NOT allowed to share in-app purchases. So if you buy Pro on its own, your family can download the app for free. But if you purchase a in-app upgrade, your family members have to but their own copy of the app. If you have brothers or sisters, spouses, parents, children, or friends who could use the app, it is better for them to share in a family plan.

我也手贱点了PRO（还以为会恢复购买）结果是多付了一份68， 等appstore退款ing。

付了两遍钱的同学们可以在 App Store 申请退款。一般情况下都是会退的，理由用中文写就可以了。

我也是，你们都解决了吗？

我也是付了两次款

内购的免费版是恢复里面的恢复购买，付费版是下载付费。应该作者是为了做区分，免费下载可以做推广也可以升级付费，但确实容易搞错，建议作者是否可以考虑把升级的按键改为下载付费版，并且同步数据，我的cloud满了，删半天才传上数据同步成功(￣▽￣)

我也是，希望能解决这个问题并对付款两次的用户进行退款

我也是这个情况，付了2遍钱，求解决！