My name is Andy Anderson and I'm working on moving a C# application from V3 API set to V5 and for some reason I can't get the V5 endpoint to work. https://api.pinterest.com/v5/oauth/token. I have used the V3 endpoint for years and no issues making it work https://api.pinterest.com/v3/oauth/access_token. Also I've been working with lots of vendor API, Facebook, Google, Pinterest and others, first time I gotten stuck like this... I have past in my data with POSTMAN and get it to work but send the same data with C# HTTP Client and it keeps returning an unauthorized message. However, when I compare the data POSTMAN sends and the data my C# app sending they appear to be the same. I've been working with Pinterest API for years and never had this happen before. Wondering if any one as seen anything like this an figured it out.
I'm sorry you're having issues with migrating to Pinterest API V5. Since this is an account specific question, I would recommend reaching out directly to our support team. They're equipped to resolve account-specific issues like these.
Let me know if I can help you further!
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