Hello,I am the person that will be helping you today.
In this case, you will need to uninstall the Pinterest app and reinstall it. Please, do that and report back here with the status of your problem.
I will be standing by, looking forward to your response.
When were you last able to access the app on your Kindle Fire?
I have run out of ideas.
For this reason, I am opting out of the question and allowing another expert the chance to help.
The next expert will see all that is on this page, so there will be no need to repeat anything.
When another expert picks this up, you will be notified by email.
Thank you for your patience.