Angular Cordova Expert

We made an Android App from Angular using Cordova. All the things are working fine. We are just facing two errors: 1. Not able to Download the files on button Click. 2. Stripe integration not working (Basically it's redirecting on button click not working) Both errors on the App all the things are working in Angular Web App. So please fix the things for Android & IOS for Both. If you give solution for any one then also Okay. I need Professional, The work is less than 1 Hour if you know the solution, So please drop only who knows the solution. It will pay upto 2000 who will give solution fast.