These plugins might affect Jetpack blog posting if misconfigured:
Ads Inserter – If it injects code into posts in a way that breaks the block editor or REST API, it may cause issues. GoSMTP – Alters email delivery. Not directly related to blog posting, but if Jetpack uses email for notifications or verification, SMTP errors might cause connection issues. Media Cleaner – If it removes media files Jetpack references or cleans database entries aggressively, it could break links in your posts or Jetpack previews. PageLayer – A page builder. If you edit posts with PageLayer and it doesn’t follow standard post formats, Jet
