My Facebook For Ipod Is Faulty?

[Ellie]

I have had my Ipod Touch 4th Generation since January. It is working fine with the apps however the Facebook App I think its Faulty because:
- When im scrolling down my news feed, every 10 mins or so it will close off and go back to the home screen?
- When I lock my Ipod then get notifications coming through, I unlock go onto facebook and click the notifications Icon and my new notifiation isnt there. I scroll to update and it just wont come through so i then log out, but that usually doesnt work So i then have to use my laptop!
- Finally, when i go onto my profile when i click my profile picture it comes up with it then closes down (like it does on my news feed) onto the main homescreen.

I dont understand why it does this, as the rest of facebook works.I have dropped it a few times, but its just facebook that seems a problem.
I just want a simple answer that could possibly tell me what the problem is and can it be helped.
Thanks.