When logged in, click on Register self-managed to register a new workspace
Select the option to Continue Offline if you are running an air-gapped workspace or your server doesn't have an internet connection.
Paste the code you copied earlier from Connectivity Services in your Rocket.Chat workspace and hit Continue to proceed
You are then provided with another code from the cloud portal. Copy the code and go back to your local workspace
On your local workspace, paste the code you got from the cloud portal and Finish Registration
We recommend you to sync your server immediately after linking it to the cloud. To do that, head on to the Connectivity Services on your Administration panel and click on Sync.
With that done, you have successfully applied an Offline license on your server.