Hi Prem, this is not the correct way to go about getting an environment unless you are a member of one of the Adobe internal teams responsible for delivering technical trainings. You need to request a training account through your intake coordinator and you will be given an environment URL. That is to be used with our hands-on exercises only, not as a sandbox.
My training instance was disabled after a week of my training . Is it possible to enable the access again?
You would need to fill out an intake form that is part of your learning path. The environment credentials are good for 8 weeks.