ATF is currently blocked in France. Unclear, if the block is done on a DNS-level or what. Using a different DNS resolver from your ISP, a VPN or Tor should resolve the issue.
Past Incidents
Thursday 9th April 2020
No incidents reported
Wednesday 8th April 2020
Certificate error
The SSL certificate for the site had expired and was out for about 20 minutes. It has now been renewed.