There are a couple of countries where the Atlassian marketplace is not allowed to sell add-on licenses. To provide companies in these countries access to the add-on, iDalko will issue another type of license. This FAQ details out how to install such license
Steps when the add-on is not installed yet
Install the add-on (either through the marketplace or by downloading the jar from the marketplace and uploading it directly)
Close the dialog box when the UPM proposes to get a license
Refresh the page
Under the 'plugin' menu, find the 'iDalko Table Grid Editor', upload the license file and hit install
Here is a small movie showing how to proceed
Steps when the add-on was already installed
In case the add-on was already installed and the trial license is expired, you first need to clear the license box.
Select Manage 'Add-on'
Locate the idalko Table Grid Editor in the list and expand the section
Clear the license box (by deleting the existing license) and hit update