Install payment method Paysera to my react native application -- 3

Hello, I need Implement new payment method in existing react native application. Right now supporting - Stripe, Paypal and Braintree. I need add new one - [login to view URL] You need upload function to firebase. Please check attached images, for functions. Technology Used: Mobile Apps (IOS & Android) – React Native and Expo Admin Portal – React and Redux Database – Firebase Realtime Database Server Side APIs – Firebase Cloud Functions Maps & Location APIs – Google Push Notifications – Expo Demo application - [login to view URL] Paysera documentation - [login to view URL] and - [login to view URL] Please write saparas job (means you read description) and give me your price, budget about 20-30 USD Regards