In addition you will have an email with a license file attached:
Save this license file to a folder you will be able to access during the install of the server side software.
DO NOT save these files into the folder you intend to use as the destination of the install on your server. If you have a past install of any release of SIMUL8 do not attempt to use the license files in that installation – the license files in installations are converted during the installation process. Always use the file emailed.