If all your transactions are confirmed on the blockchain, but your Bitcoin (or any coin managed on this application) balance do not reflect the right total amount, with a false or a null sum, it must be a temporary display or server issue.
To see your correct balance:
- refresh your wallet:
click on the circle arrows on the top right corner, near your balance
- reset your Chrome app:
click on Settings > Tools > Reset application data
- and if it is not enough:
you can reinstall the Ledger Wallet Chrome application to force it to clear its cache and reload the data from the blockchain