Can you reach this address: 104.18.72.225

ping 104.18.72.225 -c3
ping feed.flightradar24.com -c3

Also what output does this produce:

traceroute -I=raw 185.218.24.22


I'd guess your problems are connected to the cloudflare problems that were on the main twitter regarding the main website.
To retrieve the configuration an address backed by cloudflare is used.