Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
First, let me apologize that no one responded to you sooner.
Did you still need help with this issue? If so, lets start by answering the following.
How do you normally access Pinterest, from android phone, Iphone, Windows PC or a Mac?