With 1 id you can lease on two machines.
Lease will be removed immediately.
Go to your 1st or 2nd machine that you want to remove lease.
Open qlik developer go to user preference--> licence tab--> click on clear license information.
By this your lease will be removed.
You can lease on another server you want.
Thank you very much for your quick reply.
I have followed your steps and successfully clear the license information on my local machine. (I cannot open any previous developed dashboard now)
But I still cannot lease a license on my new server.
Do you know why?
For your information, when I check the Lease License History on production server management console I can still see my two previous lease.
Do I need to wait the the history to be cleared before I can lease on another place again?
Thank you very much for your help.