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.
To get started, I need to know what type of computer you are using, a Windows XP, Vista, Windows 7, Windows 8, Windows 10 or a Mac.If its a Mac, please check the OSX version as follows, Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.
This could be a DNS issue.. lets try the following
Once you have set your connections DNS addresses to either googles 126.96.36.199 or open DNS servers ( I prefer google )
test pinterest again and let me know if its working now.
Youre very welcome.
The link I sent is 100% safe.. Its a answer.microsoft page, the official microsoft forum. However, if the issue isnt occurring anymore then you may not need to follow those steps to change the DNS as I suggested.
Hello again, I never heard back from you after you read my response.
Did you still need help with this issue? If everything is fixed please remember to return and click and submit a 5 star rating to close out the question. Or, respond if you needed further help, thank you.