I share the license between two PCs, one of which runs Sketchup 2020 and the other 2017, and that’s the one that reports a license error. Please can you help ASAP as I’ve a project to deliver by 5pm today!
Hi! If you only have 1 seat on your floating license, then only one user can open Enscape at the same time, unrestricted. Once Enscape is closed, it may also take up to 5 minutes until the seat is freed up. Is there a chance you only have just closed Enscape and immediately tried to use the license on the second machine? 
No because I’ve had the problem for over an hour. I can view the license acknowledgement info so I don’t know what the problem is.
Can you please kindly share the license key or e-mail used to purchase the license via a DM? Then I can have a look at the subscription itself.
Done