If you are creating a Meet Up and it keeps disappearing immediately, it is because you are choosing an expiration date that has already passed. A lot of people make the mistake of thinking that tonight at 2 AM for example is today's date. You need to remember that anything after 11:59 PM today is actually tomorrows date. So when you choose todays date at 2 AM, it has already expired and your listing gets deleted automatically.
For example:
Let's say that today is Friday, May 1st and it's 1 PM. I want my Meet Up to expire tonight at 2 AM. My first instinct is to select May 1st @ 2 AM. However, this is wrong. 2 AM on May 1st was this morning and has already passed. I should be selecting May 2nd @ 2 AM.
