Q: HELP

Sounds like you need to update your payment information in itunes store so you can update your apps and instagram application.

Check the link below for a guide on how to update your payment info.

Change or remove your Apple ID payment information - Apple Support

https://www.apple.com/support/itunes/account/

Maybe you don't have enough space or Restart your iPhone or check your Apple id  sign out then sign in again.. Hope this might help...

What happens when you try to download updates or redownload apps, are you getting any error messages ?

What happens when you try to download updates or redownload apps ? What have you tried to see if it fixes whatever the problem is that you are having ?

What happens when you try to download updates or redownload apps ?