Please note: Feb 13, 2020 to Feb 18, 2020 our company is spending vacation holiday . Because of this, you may get some delay on our reply until Feb 19,2020. In the vacation time, we may take 48 hour instead of 24hour to reply.
Before changing domain your need to remove the key from existing domain. Otherwise you can't use that key in another domain. Please see the image and do it before change the domain.