Have you:
- Checked the transaction on a block explorer instead of coinbase? Is it showing as confirmed there?
- Checked the addresses contained in the transaction... is the output address actually one of the ones in your Ledger wallet? Although given that you scanned a QR code, it shouldn't really have gone anywhere else.
It might just be a glitch in the ledger wallet app... have you tried creating a watching wallet in another app like Electrum and see if it detects your coins? If all else fails... try contacting Ledger support.
It is showing as confirmed when I look on a block explorer. I can't seem to find how to look at the output addresses I have in the Ledger wallet as it changes each time; is there a way to do this? I'm hoping it is the right one because of the QR code.
How do I go about creating a watching wallet?
I've also emailed Ledger support and Coinbase but neither has come back to me as yet.