Craigslist Account Blocked - YouTube
Jul 20, 2011 How To Contact Craigslist Support - Tech Junkie Aug 18, 2018 Blocked by Craigslist?! - NewspaperGrl
IP blocked on craigslist. Anyone else? - SearchTempest.com
Craigslist IP Blocked ? Here is what you need to do Jan 25, 2019
When you upgraded your modem to a gateway you received a new address. The previous "owner" of that address probability violated Craigslist's Terms of Usage and got that IP blocked. The only way to solve this is to force a new IP address, Tiffany's suggestion of connecting you computer directly to your modem would work but you can't with a gateway.
Craigslist blocked IP : TOR - reddit