How Do I Fix My Cash App Failed For My Protection? If you want to know this, seek help from a team of cash app professionals. Make sure to talk to the technical helpdesk team of the cash app to fix the issues. With cash app support, you can easily know why the transactions are getting failed. Get in touch with techies of cash app users with quick rectification solutions. So, all that you need to do is to ring the cash app helpline number to get troubleshooting instructions.