InDesign CC library won't accept adding paragraph styles

Hi, I'm working through tutorials to learn InDesign. I just tried to select paragraph styles in the styles panel, then click "add selected styles to current CC library". The styles show up in my current library for a few seconds but greyed out. I hover the cursor over the greyed out styles and there's a note "This item is not supported in InDesign". (attached screenshots of the steps) I haven't had any trouble adding items to my library so far - color swatches, graphics, text. What could be going on? I tried adding them individually, and multiple. They keep just disappearing. Any idea what's going on?