That assumes the issue is with n8n not waiting for ScrapeNinja to respond. I’m not sure that’s the issue though. It appears that ScrapeNinja is telling you that it timed out waiting for something that was being done on the server end. If that’s the case, you might be able to send it a request parameter (if the service works that way) to allow more time.
Also, btw, it looks like there might be a ScrapeNinja node available soon. If you were running self-hosted, you could go ahead and try the community node, but maybe not quite yet on n8n-cloud.