How to see the date my Snapchat account was created?

So I just got snapchat and I apparently already have an account which has a really old screen name of mine as the username. I haven't used this name since like 2009 and I've only had an iphone for a couple of years so I'm really confused.

  • Why doesn't my iPhone let me see snapchat videos? Ok so I hold on the snapchat. And it doesn't show up at all should what should I do? And I already tried to delete the snapchat app and redownload it but it doesn't work!
  • Why can't people see my snapchat videos on my front camera? When I try to send snapchat videos on my front camera, most people can't open them. I have to keep taking videos on my back camera in order for people to see them. At least all my friends with iphones can't open them. My friends with androids can. I have an android (xperia sp). Any reason why this is happening? And how I could fix this.
  • Why can't I see snaps on my iphone from an android snapchat user? My friend has an android my touch and every time he sends me or my girlfriend a video (we both have iphones) we can't see it? We can see his pics but not videos. We're able to see other videos from other android users and his wife who has an android can see his videos but why can't we? Any help would be awesome!
  • Is there a way to see date and time when an app has been downloaded on an iPhone? I think my husband might be using a dating app to cheat on me but I can't be sure. He s downloaded it before and should ve deleted it, so the cloud with the down arrow won't be proof. Is there a way in the App Store to see if it was recently redownloaded?