This was the reply:
Unfortunately, we are only able to add Cash Back to your account once the store lets us know about your order. We will contact the store to verify your order. It usually takes a while to hear back. Depending on the store it might be 10 business days for us to hear back, but it may also take up to 45 days. We realize this can be frustrating and an inconvenience. We really appreciate your patience and we'll make sure to get back to you once we hear back from the store.
Feel free to reach out to me if you still have any questions in the meantime. Thank you.