No any effort from developer is needed!
From the recent versions OAP also supports chargeback and refund notifications from some registrars.
Here is an updates list of payment processor systems that Online Activation Panel supports for now:
- ShareIt!
- RegNow
- Plimus
- Avangate
- PayProGlobal
- PayPal
- E-AutoPay - https://e-autopay.com/
- JVZoo - https://www.jvzoo.com/
- Clickbank - https://www.clickbank.com/
- Digistore24 - https://www.digistore24.com/
- Allsoft.ru - https://allsoft.ru/
- SoftKey - https://www.softkey.ru/
- Selly.gg - https://selly.gg/