Katalon Runtime Engine - Trial License

How long is KRE’s license trial period ?
KRE : Installed two weeks ago
Worked well one time last week.
Today - error :
Katalon TestOps: Unexpected response, URL: https://analytics.katalon.com/oauth/token, Status: 400, Response: {“error”:“invalid_grant”,“error_description”:“Invalid credentials.”}

Hi @a.lyazid.ext
Every account with a business email is eligible for 30-day trial period. You can check your trial period by login to TestOps > User > License.
About the error, please check again if the API key you used to run KRE is valid.