Unfortunately, Windows phones and tablets aren't very compatible with Pinterest right now. When you're on a computer, hovering over a Pin shows the Pin It and like buttons to click on. Since Windows phones/tablets don't work the same way, you can't interact with Pins the way you can on a computer or other tablets and phones.
We also know that there is high demand for a Windows app. If you'd like to see a Windows app, please vote for it using the Me too! button below. Thanks for your interest and for using Pinterest!