You are automatically granted a 30-day free trial of TestCloud once you have created a Katalon Platform Account. See: TestCloud Trial.
Via Katalon website
Via Katalon TestOps homepage
When a trial or subscription is applied, all users who belong to a Katalon Platform Account can have access to TestCloud sessions.
Subscribe to TestCloud via Katalon TestOps homepage
Follow these steps:
Sign in to Katalon TestOps and select the desired Account.
Go to Settings > Subscription Management.
In the Additional Products section, click on the Subscribe button of TestCloud.
In the checkout page, select the billing cycle (monthly or annual) and the number of TestCloud sessions you want to purchase.
Fill in or update your billing information, then click Checkout.
Once you have successfully subscribed to Katalon TestCloud, go to Subscription Management > Additional Subscription to view your subscription information.
Your subscription will automatically renew on the expiry date, and you will not be charged if you cancel your subscription before that day.