I'm trying to flag an activity that has drawn the attention of people in a Strava club because it's ridiculously fast for the activity. Probably the guy forgot to turn off Strava when he was done and then drove off in a car.

When I fill out the form and click the flag button I just get Strava error page that says "Sorry, this one stays red." Which I could mean anything from a 404 to something seriously broken. Whatever the case, I can't flag the bad activity.