Hi there, @arjun.raj. Welcome to the Community and thank you for your interest in our program.
I don’t know any way to help you reactivate the product trial while still keeping your current work. But I do know a way to help you get a free license to use Katalon TestCloud (for Practitioner & Expert certifications) or Runtime Engine (for Professional certification). That is to follow the Kudos Reward Scheme.
So, basically, you will need to do certain activities (answering questions, inviting new members, etc.) to earn what is called Kudos points. Then, exchange those points for free licenses to use Katalon solutions to get your wanted certification. That’s the only way I know.
Hope it helps.