Short answer
Uploading many ads at once makes OpenAI's crawlers visit many landing pages quickly, which can trigger rate limits or bot protection on your site. Look for 429 Too Many Requests in firewall or CDN logs, relax limits for OpenAI's crawlers, and upload in smaller batches over a longer period.
Fix
- Check CDN and WAF logs for 429s and bot mitigation events
- Allowlist OpenAI crawler user agents
- Split uploads into smaller batches
- Resubmit ads stuck after the block
Questions
Is this an OpenAI limit?
Usually it is your site protecting itself. OpenAI's guidance is to fix access, not to request a bypass.
Facts checked against the sources below on 12 October 2026. Platforms change quickly: if something here no longer matches what you see, tell us and we will update it.
