QoinPro had an Android App in development in 2017 that was listed in Google Play's Beta channel on the "open testing" track. It never left the Beta program and support has been discontinued, development stopped in the same year. There was never an iOS App.
Unofficial APK files
Unreleased-, unofficial- or APK releases / application bundles not hosted in the Google Play store were never supported and it's usage is strongly discouraged. QoinPro has never released a mobile app outside the Google Play platform (beta channel). These apps are not working and may pose significant security risks.
When did Development and Support end?
Development for the Android App started (and ended in 2017), the app never left Google Play's Beta channel. There was never an iOS App.
How were In-App refund requests handled during the Beta?
During the beta stage in 2017, immediate refunds could be initiated by the user for up to 48 hours after a purchase through the app store directly IF the request was valid and the purchase came from a genuine installation. Additionally the refund request MUST come from the e-mail address that initiated the purchase.
In general, after 48 hours, manual refund requests at the Play Store can only be made by the developer and thus upon request to QoinPro by the user. Refund requests have generally been processed, with the exception of:
Known disabled / suspended / duplicate or fake accounts
Users in sanctioned regions or territories
The transaction is older than 12 months
When the Play Store prevents it. (i.e. perhaps the user no longer has a Play Store account).
After QoinPro decided to discontinue in 2019, a deadline of July 31, 2021 was announced for final processing of refund requests.
Finally, it is possible that during clean-up, (or when an error was noticed) that refunds were initiated by QoinPro without notice. In that case the user would have received a notice from the App store directly.