ERROR for ARK server

[Marc Palm]

When i start the server all it's working but when I search in the steam's server browser my server is no working.

ARK console :

Using binned.
4.5.1-0+UE4 7038 3077 404 10
[S_API FAIL] SteamAPI_Init() failed; SteamAPI_IsSteamRunning() failed.
Setting breakpad minidump AppID = 346110

ARK details

Distro Details
================================================================================
Distro: Ubuntu 18.04.1 LTS
Arch: x86_64
Kernel: 4.15.0-38-generic
Hostname: vps633040
tmux: tmux 2.6
glibc: 2.27

Performance
Uptime: 0d, 0h, 45m
Avg Load: 0.26, 0.51, 0.72

Mem: total used free cached available
Physical: 5.7GB 4.4GB 1.1GB 1.2GB 1.1GB
Swap: 0B 0B 0B

Storage
================================================================================
Filesystem: /dev/sda1
Total: 25G
Used: 9.5G
Available: 15G
LinuxGSM Total: 7.9G
Serverfiles: 7.8G

ARK: Survival Evolved Server Details
================================================================================
Server name: LinuxGSM
Server IP: 51.75.255.138:7777
Maxplayers: 70
Default Map: TheIsland
Status: ONLINE

arkserver Script Details
================================================================================
Service name: arkserver
arkserver version: 181216
User: arkserver
glibc required: 2.15
Discord alert: off
Email alert: off
Pushbullet alert: off
IFTTT alert: off
Mailgun (email) alert: off
Pushover alert: off
Telegram alert: off
Update on start: off
Location: /home/arkserver
Config file: /home/arkserver/serverfiles/ShooterGame/Saved/Config/LinuxServer/GameUserSettings.ini

Backups
================================================================================
No Backups created

Command-line Parameters
================================================================================
./ShooterGameServer "TheIsland?AltSaveDirectoryName=TheIsland?listen?MultiHome=51.75.255.138?MaxPlayers=70?QueryPort=27015?RCONPort=27020?Port=7777 -automanagedmods"

Ports
================================================================================
Change ports by editing the parameters in:
/home/arkserver/lgsm/config-lgsm/arkserver

Useful port diagnostic command:
netstat -atunp | grep ShooterGame

DESCRIPTION DIRECTION PORT PROTOCOL
> Game INBOUND 7777 udp
> RAW INBOUND 7778 udp
> Query INBOUND 27015 udp
> RCON INBOUND 27020 tcp

Status: ONLINE

To conclude, my server is online but nobody can see it and join...

[UltimateByte]

Hello,

Please, see https://docs.linuxgsm.com/support/troubleshooting#connectivity-issues

Best regards