The restrictions in your course DO NOT always lift immediately. The learner management system runs a series of checks to confirm that the completion criteria has been met before updating the status and lifting the restrictions.
This can take up to an hour as it is dependent on the schedules set for the completion checks to occur as well as when the user has completed the task.
The following related articles cover the topic of restrictions.
- Why is a unit/activity restricted? – REAA (zendesk.com)
- Why are units in my course restricted – REAA (zendesk.com)