This has already been reported.
For More Information see: FMS 14.01 licence key conflict with itself
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip
Thank you for your post.
As PhilModJunk mentioned (thank you), our Development and Testing departments are already aware of this issue.
I have attached your post to the original report so that when more information becomes available, I will let you know.