To use an old account of Cash app, proceed to make a couple of snaps. To begin with, you ought to need to affirm that you continue helping all certifications to remember your old record like client id, secret key, and so forth. Along these lines, proceed to open up your Square app account and press profile symbol. Afterword, go for the individual area to include a missing contact number or email address. For more detail, use Cash app customer service phone number.