I see that this question was asked a little while ago, and it says it was resolved, but there was no mention of how it was resolved. I have the latest version of Countdown Timer. I am trying to add one time events, but cannot. I enter the event info and then click the Save at the bottom of the page. No event is saved.
The previous poster mentions an "Add" button. I don't see one of those. My screenshot looks the same at the previous user's. I have tried this in Chrome and IE.
Link to the old post: