@Xerxes how to install in friend mode

Another question I am trying to configure my server in linux using pterodactyl but for some reason it does not connect the rcon and everything is well configured both in iw4admin and the server in dedicate.cfg

https://prnt.sc/xOfKdUhcLC2i

Friend, how do I make my server stay old 27/4 that it does not crash I follow your guide the server starts up perfect but it closes I do not understand because the console is still on it does not show an error but the server does not appear in the list I must close reopen use window 2019

@Xerxes because on my part if I copy and replace the files of the new version and the server does not appear on the list, I only connect if I put the ip + the port use vps

I already updated the dedicated one but now my server does not appear in the list of online servers?