Thanks a lot Srini for your gr8 help. you helped in to explain below steps and solved this problem. Thank you again!
It was a problem for the Tenant; I was not able to see Licenses Info.
As a solution suggested by @ksrinu070184, I logged in with another organization.
Navigated to Orchestrator > Tenant > Machine > Add > Provision .
Navigated to Default folder > Created Environment
then Robot > Added new robot with Type ‘StudioPro’
Uipath Assistant at system tray (bottom right) > right click > Orchestrator settings > entered Orcehstrator URL and MAchine Key > Connect.
When i Launch Studio, i was able to get in. It did not ask me again to do ‘interactive sign-in’.