If you'd like to see skins on a cracked server, you need to have Paper or Spigot version installed instead of Vanilla Minecraft. This is due to the server requiring a third-party plugin such as SkinsRestorer to be installed on the server to show skins.
How to Enable Skins?
Head over to the Game Panel and stop your server.
Download the SkinsRestorer -plugin on your computer and after its installed, navigate to the "plugins" folder in the "Files" tab of the game panel. Upload the downloaded file there.
Done! You can now start the server and the skins will appear.
🎉 Congratulations, you've successfully enabled skins on your cracked server. If you have any issues or concerns, please contact us through the ticket system.