I have a feeling this is a new twist with iCloud, since all the subscriptions listed under that section in Calendars on my MacBook Air have stopped working too. Makes me think the cloud is the culprit.
What I did (both on my iPhone and the MBA):
iPhone
- Copied/pasted subscription addresses into an email that goes to my phone
- Opened the email, then tapped each link, one by one
- When asked if I wanted to add the subscription, I tapped Yes
Strange, but it worked, putting the subscriptions on my phone (local) as opposed to iCloud (where they were before).
MacBook Air
Tried re-subscribing, but can see the "iCloud" option is now grayed out. Saved them to "On My Mac," which added them to the list, but...they still refuse to sync. For that, I have no solution (she says, with great irritation, since TripIt is one of those subscriptions).
Anyone have a solution for the desktop issue (since my phone solution above appears to work)?
* * * UPDATE * * *
Just checked the iPad (also running iOS 7). Oddly, it still picks up the original subscriptions, and is current on all. Whattheheckisgoingon...?