DeutscherRitterPlatz

You are specifying the time in seconds, so 1080 seconds is not 18 hours but rather 18 minutes. If you want to have 18 hours, you need to set it to 64800.
 
"Cooldowns (0 = No Cooldown)": { "Reset Cooldown Costs": { "Custom Currency": { "Enabled": false, "Item Shortname": "scrap", "Item Name": null, "Amount": 0, "Skin": 0 }, "Economics Money": 0.0, "ServerRewards Points": 0 }, "Easy": { "VIP Permission: raidablebases.vipcooldown": 300.0, "Admin Permission: raidablebases.allow": 0.0, "Server Admins": 0.0, "Normal Users": 64800.0 }, "Medium": { "VIP Permission: raidablebases.vipcooldown": 300.0, "Admin Permission: raidablebases.allow": 0.0, "Server Admins": 0.0, "Normal Users": 64800.0 }, "Hard": { "VIP Permission: raidablebases.vipcooldown": 300.0, "Admin Permission: raidablebases.allow": 0.0, "Server Admins": 0.0, "Normal Users": 64800.0 }, "Expert": { "VIP Permission: raidablebases.vipcooldown": 300.0, "Admin Permission: raidablebases.allow": 0.0, "Server Admins": 0.0, "Normal Users": 64800.0 }, "Nightmare": { "VIP Permission: raidablebases.vipcooldown": 300.0, "Admin Permission: raidablebases.allow": 0.0, "Server Admins": 0.0, "Normal Users": 64800.0 }, "Apply Cooldown To Entire Clan And Team": true, "Apply All Cooldowns": true }, It is important to note that if your default group has the permission "raidablebases.vipcooldown," then those players have a cooldown of 5 minutes because 300 seconds equals 5 minutes.
1minutes = 60 seconds