Cant add affiliate link.

On the picky app, there’s an option to add your affiliate links right? When I click it, it takes me to where I can click on a plus sign, but when I do so, nothing happens :( I’d like to add my yesstyle affiliate link, but it’s not working. Is this because that isn’t possible and that tab is meant for something else? Or is it just trouble shooting? Let me know!! 💗😪