There could be a few reasons why you are unable to add your Cash App card as a payment method on Uber. Here are a few things to consider:

1. Ensure that the card is activated and has funds: Make sure that you have activated your Cash App card and that it has enough funds to cover the cost of your ride.
2. Check that the card is compatible with Uber: Not all prepaid cards are accepted as payment methods on Uber. Check with Uber to see if Cash App cards are compatible with their platform.
3. Verify your card details: Double-check that you have entered the correct card details, including the card number, expiration date, and CVV code.
4. Contact Uber support: If you have tried all of the above and still cannot add your Cash App card as a payment method, contact Uber support for further assistance. They may be able to provide more information on why the card is not being accepted.
5. Try a different payment method: If all else fails, try using a different payment method, such as a credit card or debit card, to pay for your Uber rides.

How to add money to cash app card?

To add money to your Cash App card, follow these steps:

1. Open the Cash App on your mobile device.
2. Tap the "My Cash" tab located on the bottom left of the home screen.
3. Tap "Add Cash."
4. Enter the amount of money you want to add to your Cash App card.
5. Tap "Add."
6. Choose your preferred funding source, such as your bank account or debit card, and follow the on-screen prompts to complete the transaction.
7. Once the transaction is complete, the money should be added to your Cash App card balance.

Note that there may be fees associated with adding money to your Cash App card, so be sure to review any fees or terms and conditions before completing the transaction. Also, keep in mind that it may take a few days for the money to be reflected in your Cash App balance, depending on your funding source.