Server not on the master list

My server does not show up on the master list, I think it has something to do with the fact that when I start my server up I don’t get the “adding master server” message that eveyone else seems to get, I just get Connection to steam servers succesful and It lists my public ip.
It runs a Ubuntu VPS
This is my config file if it helps


// Server Name
hostname "[UK/EU]GunpointRP NEED STAFF!|50K Start!|Meth|Wire|FA:S

// RCON Password
rcon_password "XXXXXXX"

// Server Password
sv_password ""

// Server Logging
log on
sv_logbans 1
sv_logecho 1
sv_logfile 1
sv_log_onefile 0
lua_log_sv 0

sv_rcon_banpenalty 0
sv_rcon_maxfailures 20
sv_rcon_minfailures 20
sv_rcon_minfailuretime 20

// Network Settings
sv_downloadurl "http://gunpointg.pe.hu/fastdl/"
sv_loadingurl "http://gunpointg.pe.hu/loa/?steamid=%s"
net_maxfilesize 64
sv_maxrate 40000
sv_minrate 40000
sv_maxupdaterate 66
sv_minupdaterate 10
sv_maxcmdrate 60
sv_mincmdrate 10

// Server Settings
sv_airaccelerate 100
sv_gravity 600
sv_allow_wait_command 0
sv_allow_voice_from_file 0
sv_turbophysics 0
sv_max_usercmd_future_ticks 12
gmod_physiterations 4
sv_client_min_interp_ratio 1
sv_client_max_interp_ratio 2
think_limit 20
sv_region 3
sv_noclipspeed 5
sv_noclipaccelerate 5
sv_lan 0
sv_alltalk 1
sv_contact youremail@changeme.com
sv_cheats 0
sv_allowcslua 0
sv_pausable 0
sv_filterban 1
sv_forcepreload 1
sv_footsteps 1
sv_voiceenable 1
sv_voicecodec vaudio_speex
sv_timeout 120
sv_deltaprint 0
sv_allowupload 0
sv_allowdownload 0
sv_allowlua 0

// Sandbox Settings
sbox_noclip 0
sbox_godmode 0
sbox_weapons 0
sbox_playershurtplayers 1
sbox_maxprops 250
sbox_maxragdolls 0
sbox_maxnpcs 10
sbox_maxballoons 2
sbox_maxeffects 0
sbox_maxdynamite 0
sbox_maxlamps 5
sbox_maxthrusters 2
sbox_maxwheels 4
sbox_maxhoverballs 0
sbox_maxvehicles 1
sbox_maxbuttons 20
sbox_maxemitters 2

// Misc Config
exec banned_user.cfg
exec banned_ip.cfg
heartbeat 1


I’m definitely not experienced when it comes to this, but it MAY be due to the region. Try setting it to 255, as this will allow players to see the server globally.

>https://developer.valvesoftware.com/wiki/Sv_region

This won’t make a difference on GMod