"System error. Please try again later" when connecting to paypal sandbox account with my android app

[rocksteadyla]

My button calls the paypal window and I click on Pay with PayPal, but I get system error. Please try again later. I have tried 4 different sandbox account. 2 personal and 2 business and my personal account with multiple different password and I always get the same error message "system error. Please try again later". I checked the status of the paypal services and they say everything is functioning well.

This is my button composable:

Button(onClick = {
    Log.i("PaymentExample", "price inside button = ${price}")
    Log.i("PaymentExample"," selected product inside button = ${selectedProduct}")
    val payment = PayPalPayment(
        BigDecimal(price), // Amount
        "USD", // Currency
        paymentViewModel.getProductSelection(), // Item description
        PayPalPayment.PAYMENT_INTENT_SALE // Payment intent
    )

    val intent = Intent(context, PaymentActivity::class.java).apply {
        putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, payPalConfiguration)
        putExtra(PaymentActivity.EXTRA_PAYMENT, payment)
    }

    // Launch the PayPal activity to initiate payment
    paymentLauncher.launch(intent)
}) {
    Text("Pay with PayPal")
}

This is my paypal configuration "

@Provides
@Singleton
fun providePayPalConfiguration(): PayPalConfiguration {
    return PayPalConfiguration()
        .environment(PayPalConfiguration.ENVIRONMENT_SANDBOX)  
        .clientId("My client Id")
}

Am i missing something important?