Form-based authentication (FBA) authenticates Nintex Mobile users through a web application sign-in page instead of the app sign-in screen. For more information about FBA for Nintex Mobile, see the help.
To enable FBA access to Nintex Mobile for the SharePoint farm
On the Central Administration Home page, click Nintex Forms Management.
Click Manage FBA Mobile Access.
Select Enable FBA.
To change the token expiration period, select the desired value for Set Nintex Mobile Token Expiry.
Click OK.
Note: If your network infrastructure uses a firewall, ensure that FBA endpoints are externally accessible by Nintex Mobile. FBA endpoints are located at the following URL: <SiteUrl>/_vti_bin/NintexMobile/FBA/