Square | How To Retrieve Application ID and Access Token
Steps to retrieve the Application ID and Access Token from your Square account
Click the link below
Click Open on your existing app
Be sure the option at the top is Production.
Copy the Application Id and Access Token one by one and paste it into the mobile app, within the Square designated section.
Note: If you have no Application, click the + option to add a new one. In the “Create an Application” screen type the name of the app. You can type whatever name you want, for example, RingMyStylist, RingMy Barber, or RingMyGroomer.