You are not allowed to sell these free provided models, they are only to be used with Enjin's Multiverse items.
The pack contains the older varients of the models as well if you want to use them.

Commands to Summon the items in vanilla minecraft.

Forgehammer - /give @p minecraft:wooden_sword{CustomModelData:1}

Epochrome Sword - /give @p minecraft:wooden_sword{CustomModelData:2}

Timeripper - /give @p minecraft:wooden_sword{CustomModelData:3}

Wanderer's Elixir - /give @p minecraft:stick{CustomModelData:1}

Ansible - /give @p minecraft:stick{CustomModelData:2}

Oindrasdain - /give @p minecraft:wooden_sword{CustomModelData:4}

Tramyarus Quarter - /give @p minecraft:stick{CustomModelData:3}

Starbow - /give @p minecraft:bow{CustomModelData:1}

Azure Heroes Learner - /give @s minecraft:carved_pumpkin{CustomModelData:1}

Aeonclipse Key - /give @s minecraft:stick{CustomModelData:4}

Stormwall - /give @s minecraft:shield{CustomModelData:1}

APG-M55 - /give @s minecraft:stick{CustomModelData:5}

The Mask of U'thuchul - /give @s minecraft:carved_pumpkin{CustomModelData:2}