A. Check if your debit/credit card is valid and has sufficient funds. Ensure that the card is not expired and that you are entering the correct card details. If the issue persists, try using a different payment method, such as PayPal or a different card.

B. Clear the app's cache and data. Go to your device's Settings > Apps > Ulta Beauty > Storage > Clear Cache and Clear Data. Restart the app and try the transaction again.