If you see the above message on your WordPressdashboard, then this indicates that the LearnDash update and license checks have been disabled using the following define (located in the wp-config.php file of your site):
To activate update and license checks again, simply remove the above code from your
Turning off update and license checks will result in an invalid license and the inability to use the automatic update (or install) feature for the LearnDash plugin, ProPanel, and all other LearnDash add-ons. The Add-ons menu will not be displayed until licensing is validated again. LearnDash may still work but we cannot guarantee compatibility with future versions of WordPress, so we encourage that this setting only be turned off temporarily.