I rerunning succeeded operation on the past, but the same error occurred. I even tested with another automation tool, and I got the same issue and the same message. Perhaps Pinterest wants to limit publishing with automation tools? Or perhaps the recent Cloudflare issue impacted API access for some sites?
Yes, I posted manually and two things happened. When I upload the image directly from my computer, the pin is published without any problem. But when I use the “upload image via URL”, I get this message on Pinterest:
I checked my host, firewall, and security plugins in WordPress without success. The only solution I found was to add an “Http: Download file” module and in the Pinterest module, change the “image URL” setting to “image64”. It’s working now.