The error you are seeing has nothing to do with License server.
It means the RSCM server at address 149.223.xx.xx is not reachable, or the process running RSCM is not working.
RSCM is a server configured to allow design concurrency.
In your dialog you are also referring to a project location which is on your local drive (C:\Users\xxxxx) and for sure unless the RSCM server machine is exactly your machine this won't never work.
Please leave the "Server Name" entry blank and you'll see it won't error.