I posted an activity which I now need to cancel as the date has been changed. When I log in to the activity, it is no longer showing me as the activity owner and there is no option to edit or cancel it.When I filter the activities by those I have posted, the activity does not appear (but it is still open on the site). I can't even see who is attending the activity now so that I can email them to let them know of the change.

I re-posted the same activity with a date change, and that one gives me the ability to edit, invite others, cancel etc.

Has anyone else had this problem?

Is this a bug or am I missing an important piece of information?