Only 5 character code, no 6 character code

I try to scan the code on my iphone and I only ever get 5 characters. Its not scanning 6 so I can't open any apps.

You can always type the 6 character code in if you are having problems. I have never seen the QR code scanner only read 5 of 6 characters (QR codes have built in error correction to help ensure accuracy of the scanned value). Can you tell us more about your device configuration?