How to deal with "online license check failed” message
For Commercial Edition, if you are now using online license and has not yet committed to license to the computer, it will require constant Internet connection. Without Internet connection, in 3 days the online license check will fail. Nevertheless, the license code will automatically restore after 24-hours of inactivity.
We don't keep commercial license record forever so make sure in the future you will commit the license once the installation is stable within short time.
For more info please refer to License Authorization.