From the Alarm.com Website
Open this link https://www.alarm.com/web/system/home/locks to be sent to the locks page after you login.
Login to Alarm.com using the credentials you use for the Fluent app.
Click on the lock you wish to lock/unlock.
Click on the displayed lock or unlock action.
From Fluent App
Log into the Fluent app.
Tap ☰.
Tap Locks.
Select the lock(s) you wish to lock or unlock by tapping the lock's name. The checkbox will toggle on when that lock is selected.
Tap Lock or Unlock at the bottom of the app.