Hi,
I was earlier working with Katalon command line, old versions like 5.0 but with the new update of the Katalon 7.1, i am unable to run my test script using the updated katalon Engine 7.1.
If you are looking for offline activation, then the feature is available only for paid license.
To activate online, first go to C:\Users\10303050.katalon\license and delete the license file. You can see this path in the picture that you posted.
Then please make sure that you are using a business email for Katalon account to be eligible for trial of Runtime Engine.
In TestOps, visit your personal page. On the left panel you should see Licenses section. If you are eligible for trial, you should be able to see the expiration date.
Finally, you need to include an API key in your command line. In the above image, you should also be able to see the API Key button on the left panel. Navigate there to see the API key, create one if none exists.