What Changed
Reporting indicates that Instagram Explore Feed and Messenger Stories placements no longer exist in Marketing API v26.0, and that integrations pinned to an unsupported version will be force-upgraded into those changes. Separately, device and hourly reporting breakdowns reportedly went dark for accounts not opted in, returning an empty successful response rather than an error, so connectors can write zeroes instead of flagging a failure.
Source pending: this has not been confirmed against Meta's Graph API changelog. Verify before publishing.
Why It Matters
The reporting failure mode is the dangerous half of this. An empty response returned as a success does not trip any alarm in a connector; it writes zeroes into the table and the dashboard shows a clean-looking decline that nobody questions for a fortnight.
Check whether device and hourly breakdowns are still returning data on every account, and compare against a date you know had volume. If your reporting stack is custom or built on a third-party connector, add a guard that treats an empty successful response as a signal rather than a value.
Separately, audit which API version each integration is pinned to. Anything on an unsupported version gets force-upgraded on Meta's schedule rather than yours, and any campaign or automation referencing a removed placement needs rebuilding before that happens.
[Confirm against Meta's Graph API changelog before publishing — this is currently sourced from secondary reporting only.]