The Ledger hard wallet contains many different wallet addresses. The way you set up your Ledger will change the order in which these addresses are displayed. The Ledger Live app and Ledger Legacy have different derivation paths. 

Select the same format that you used to set up your wallet in order to have your primary address show up first.

In the wallet selector click on the wallet first drop down.

This will allow you to change between derivation paths.

Ledger Legacy derivation path: m/44'/60'/x

Ledger Live derivation path: m/44'/x'/0/0