Ark: Survival Evolved - Add Mods from Search

Copy Mod ID from Steam

Click the view all button. It will pop up a new browser window and redirect you to curseforge ark: se mods page.

From there find your mod and click on it.

Copy the id from the description.

Add Mod by ID

Go back to Mods tab and press ADD BY ID button. Paste in the MOD ID and press ADD. Mod has been added.