Finish PayPal SDK Integration - 90% Already Done【20 USD - 2 Days】

The following tech doc will be useful to you:
https://developer.paypal.com/studio/checkout/advanced/integrate
Frontend (React), Backend (.NET)

TODO List:

1. Remove all red errors related to PayPal payment listed on console.【5 USD】
Including but not limited to:
[Violation] Potential permissions policy violation: geolocation is not allowed in this document.

headers: {
"Content-Type": "application/json",
"Permissions-Policy": "geolocation=(self 'https://mandarinnu.com')"
},

2. Save transaction ID to database for accounting uses, most code are finished.【10 USD】
const transaction = orderData?.purchase_units?.[0]?.payments?.captures?.[0];

3. Hide billing address fields and enable faster checkout. 【5 USD】

You must know both C# and JS.