Products in your inventory get their name from listings during the linking process. But you'll notice there's no way to edit a product's name because there... isn't. We'll be adding that functionality soon.
In the meantime, you can achieve a product rename by doing this:
- Unlink all listings to it (by editing the listings' SKU to something else)
- Update one of the listing's title with the product name that you want
- Then edit that listing's SKU back to the correct one
- Once you see the product name updated in your inventory, you can link the remaining listings back to it