Add Paystack Payment to Website & App.

PLEASE READ CAREFULLY I have a taxi website with android & ios app, they already have other Payments like Stripe, Payumoney, Paypal, Paypal Adaptive, Braintree & Paytm. The Stripe payment is a card payment, riders can already add their cards stored in their account and use it to books rides and add money to their wallet, and also the drivers side too, the driver can also add their card to their profile and use it to add money to their wallet. This works for website and app, for both riders and drivers. It has everything already. WHAT I WANT The app already have everything, i just want to add Paytack payment to the platform so that riders and drivers can also add their cards just like the stripe and use it to book rides. [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] Lastly. I want to do a little Promocode Tweak. System already have promocode, I just want to tweak the features.