Always Online is a Cloudflare feature to serve an older copy of your site if your Origin is unavailable, and the Cloudflare cache is empty. It is an opt-in feature, and the Internet Archive integration is a separate opt-in feature.
If you opt-in to the Always Online Internet Archive integration, Cloudflare will notify IA that a page needs to be indexed. IA will then index as normal, and if you have robots.txt or firewall rule to stop that, then the indexing will fail.
If you already block IA, then you should make sure Always Online is disabled.
Block the as number its what i done and works well, i dont know what has changed i never enabled always online with Cloudflare, but last night they scraped 35 gb and i got argo on so thanks ia ya mongs.