Captivate 5.5 licensing question

My workgroup has a Captivate 5.5 license which was used on 2 laptops a couple of years ago. Those laptops have since been decommissioned due to lease expiration. Now we have a new project that needs Captivate - I'm trying to install and use our old license number but get a message that the limit is reached for this license number. I don't have access to the old laptops to deactivate Captivate from them. Can I get a replacement license number to use on two new laptops?