Your network blocks the Lichess assets! IP whitelisting If you are organizing an event at a school or other location that requires many people to be able to access Lichess at the same time, you can request higher rate limits by sending a request with the network's IP address to contact@lichess.org . Your firewall should be configured to allow traffic to/from these domains:

lichess.org (and its subdomains, ex socket2.lichess.org) lichess1.org (used for static assets) Captcha errors during login We use CloudFlare Turnstile for security, like many other websites. Check your device and network for compatibility .