https://airtribune.com/2018-quest-air-cross-country/blog__day_6

The task doesn't show up at the URL above.

Brett at Airtribune writes:

Google changed their API for accessing Google maps yesterday. It
took Flymaster and Airtribune down (along with millions of other websites).
Flymaster have resolved theirs, but we are waiting for some development time to
fix Airtribune too. Really sorry about that. It is bad timing as we are still
recovering from another code change that has killed our Leaderboard and we are
unable to find the cause. Fingers crossed we can fix it soon.