If you're on a dedicated server in Windows, while server is offline you'll need to go to \common\ARK Survival Evolved Dedicated Server\ShooterGame\Saved\Config\WindowsServer and open up GameUserSettings.ini in Notepad++(recommended), scroll to the bottom of the document and paste all of this:

[FutureEvolved]
RemoveSkinsOnSpawn=False
ShardPercentChance=100
ShardAmountGiven= 5
TamedDinosGiveShards=False
ShardsScaleWithHealth=False

Then save, close, start server up.

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If you are using the program Ark Server Manager, there is a special section of that called Custom GameUserSettings.

For the left "Section Name" box, you'd put FutureEvolved (do not include the brackets), then add the ShardPercentChance etc stuff with their desired values in the right "Custom Items" box.

Also make sure you added the mod ID number to the "Mod IDs" section at the top and have downloaded the mod and hit the Save button before starting the server.

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However, even after doing that I still can't get any element to drop off of any killed creatures, even after doing a DestroyWildDinos and restarting the server.

yes