Not sure about the licence? Check these articles.
How do I remove my license from a computer?
Where can I read the full licence terms?
On how many computers can I use the products?
Returns and Refunds
Does the license limit the number of videos or end products?
"License was activated too many times" error
My licence key from Videohive doesn’t work
Where can I find my license key for purchases from Videohive.net?
Transferring a Videohive licence key to your Mister Horse account