No, during installation, choose the "Network Client" option, this tells FEMAP to use FLEXlm licensing. The option you chose is the 300-node trial that has always been available with FEMAP. In lieu of uninstalling and re-installing, run this batch file in the FEMAP directory -
This will flip FEMAP into FLEXlm licensing. Then, make sure you have copied the license file supplied via e-mail into the FEMAP directory and you should be up and running.