I know how to use it i got it on my website tested it with my own pc and uploaded the files and when it wants to redirect to steam for the login it gets stuck and stops at Website Domain Names, Online Stores & Hosting | Domain.com. here is a link to hte github repo of the steam login GitHub - SmItH197/SteamAuthentication: A simple PHP Authentication that enables steam users to log into their steam account to access content!
if any one knows about it on what the problem is that is greatly appriciated