Unfortunately we can't speak for Pinterest on why they may have identified your content as spam - this happens occasionally by total accident when they tighten their spam filters and is often resolved in a few days. The best option is to reach out to Pinterest directly, which you can do here.

Tailwind is an official Pinterest Marketing Developer Partner, and using Tailwind alone will not put your account at risk for suspension. With that said, Tailwind has no control over what Pinterest may identify as spam, and we encourage you to practice healthy Pinning habits and abide by Pinterest's terms of use. For more information, please look through Pinterest's Community Guidelines.