This version of the app is discontinued
Overdrop now offers the possibility to unlock the Pro features in app through the free version.
If you want to support our work and unlock all the Pro features we invite you to do so by opening Overdrop (free) and selecting the Pro feature you want to obtain, a new window will open where you will be able to make the purchase.
Also by using the method above you will not have 2 apps installed on your device, just one, the free version.
This Pro key exists for the people that made the purchased before the new method was added, so they can unlock the app if they need to reinstall it.