Im having the same issues… did you ever figure out a solution?
We decided to ditch the Zapier WordPress plug-in that auto posts to Zapier for you supposedly… and instead just Post it ourselves via a User created WP hook, to the Zapier Webhook Action, which is just an endpoint Zap gives you and doesn’t require authentication like the Zapier WordPress User Created Action does. It seems better actually because we say what and when instead of relying on the plug-in to do it when it wants to.
