I got that error too when installing the Vault on our server. The first time Alibre hadn't synced my licenses properly. Once they got that corrected, I had to change the administrator (the server) to a floating license and then I could add both of my licensed users. Hope that makes sense.
OK I have a whole bunch of numbers now but cannot find how to register Mfiles, I have visited Mfiles wed site but could find nowhere to register the product.
Where do I find these instructions? I can't seem to find the Vault user guide, or any instructions about how to update my license.
I only have two days left, according to M-Files.
Whilst logged into your account, go to Downloads, click on Vault - this takes you to a new page, the first download item is Installation Instructions (click on the letters PDF at the end of the line).