Head to My Sites → Customize and open the Widgets panel.
Find the Social Icons Widget and click Add.
Add a full link (URL) to your first social network profile. For example, https://www.facebook.com/WordPresscom/ (in your case, the full link to your Pinterest)
If you’d like to add more social icons, click Add an icon and add your next social network profile URL.
When you’ve finished adding your social profiles, click Save and Publish.
it works only for facebook and instagram but if I do this for pinterese the icon looks like a chain and it’s not the P for pinterest
sorry to bother you :) could it be the theme selected or the fact that I’m not paying for a plan?