FastField User Token — The way that FastField authenticates your account. To find your token in FastField:
Log in to your FastField account, https://portal.fastfieldforms.com/portal/loginidentifier
Select your name in the lower left of the screen, then select My Profile
On the Security tab, select Manage API Tokens
Select the Add API Token button, and then enter a name. For example, My API Token.
Save your token.