PayU is the best payment processor for high-risk merchants. PayU has the expertise and knowledge of all the ins and outs in the niche. Also, you can talk to your KAM or customer care team for any specifics. It is optimized for mobile and desktops. You can accept international payments in 100+ currencies and the checkout page is translated into 30+ languages. PayU is highly secure as it is PCI DSS compliant. It also provides the feature of creating and managing recurring payments through subscriptions.