So you can fix this with to thing first use a plugin call Veterans Only i have heard that a great plugin for that. Prime thing its a command already out there ppl says it dosent work i have never tried it but the command is sv_prime_accounts_only "1" if that dosent work its a plugin free2bekicked
Veterans only link
https://forums.alliedmods.net/showthread.php?t=255871
Free2BeKicked by Asher \"asherkin\" Baker, psychonic "Not sure if it works but i upload the sourcecode and the smx file if you want to try it out"
If you wan to read more about it here
https://forums.alliedmods.net/showpo...29&postcount=3