Go to "Monetization" --> "Payment Gateway" in your CMS.
Click on sisp (See Below Screenshot)
Type the "POS ID" and "POS Authentication Code" (Which you have received after you signed up with sisp in the corresponding fields.
Finally, click on "Integrate Payment Gateway".
Note:
It only supports CVE (Cape Verdean Escudo) currency code.
As per your requirement we can implement currency conversion at our end. However, remember that, the conversion rate is completely depending on the daily currency exchange rate.
sisp doesn't support payment methods i.e. Subscription. It only supports onetime payment methods including PPV, PPV Bundle and Pre-Order.