This error is reported when:
- Restore Website Purchase option used or website Unlocker version is installed
- we don't have order registered for <email@example.com> which is specified in the error
- or Order ID entered in Already Purchased dialog is incorrect
To resolve this issue:
- ensure you actually purchased Poweramp on Poweramp website via PayPro Global
- Poweramp v2 only: add the email from order confirmation email from PayPro Global as Google Account or Email Account in your device Android Settings => Accounts
- in Poweramp Settings => Already Purchased? => Website enter the correct account/email and the Order ID.