Editing your server.cfg

Hostname

You can change the name your server is displayed as by changing the value in the brackets after hostname e.g.
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Password

You can change the password needed to join your server by changing the value after sv_password (You may need to add this line in, you may add it anywhere in the file, on its own line) e.g.
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Loading Screen

To add a loading screen to your server, you must first have a URL that takes you to your loading screen, free options include csite.io or it can be hosted on your own web host. (Most loading screens from GmodStore will come with instructions on how to install and get the URL)

You then want to insert this URL into your server cfg, in brackets, after sv_loadingurl (You may need to add this line in, you may add it anywhere in the file, on its own line)
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That’s it for now, many people may find this not needed, but there are some who have issues with this. I hope this helps.