A useful status update says what changed since the last report. Include the time of the observation, the exact feature affected, and whether the issue is improving, unchanged, or resolved. Label unverified explanations as hypotheses.
For example: “As of 14:30 UTC, uploads still fail on two networks; downloads work. We have not confirmed a service-wide outage.” If a fix was applied, say what was changed and what test passed. Do not imply recovery from one successful attempt if the problem was intermittent.
Keep private account details out of public updates and link to the earlier context instead of repeating a long history.