iPhone stopped recording
It seems I have the same issue as the recent post by Tom C. On 3 of my recent rides the Strava app has stopped after a few minutes. Anecdotally this seems to happen when the phone has a low charge, and I think it happened once when the phone entered in low power mode, however this may be coincidental.
I'm using a iPhone 5S with the latest IOS and App.
PS You say that a support ticket has been created after the Tom C. post and I would have added this information to that if it were possible.