Flightsim.to uses Cloudflare to mitigate DDoS attacks. Sometimes, the "handshake" between Cloudflare and the origin server fails. You will see: Error 522: Connection timed out This means the security check passed, but the actual server housing the files failed to respond.
While nothing matches Flightsim.to’s library, these backups can save your flight: flightsim.to down
When flightsim.to goes down, the reaction splits the simulation community: Flightsim
: Restart your router or switch from Wi-Fi to a wired Ethernet connection to stabilize the connection to the site's servers. flightsim.to down