After you've logged into the Mobile App, tap on the "More" menu option in the bottom right corner.
After the More menu loads, scroll down and then tap the "Card Controls & Alerts" menu option.
To configure and view your alerts, tap the "Set Declines and Alerts" button for the card you want to manage.
Here you can select each alert type (Merchant, Transaction, Location, Spend Limit) and then configure whether you want to block each particular transaction and/or be alerted when they occur.
To configure your alert delivery options, tap the "Back to card list" button and then tap the "Alert Delivery Options" button.
Here you can turn on/off alerts to each of your contact records.
To edit or add new contact records, tap on the "More" menu option in the bottom right corner and then "Alert Contact Information".
Here you can edit existing email addresses and phone numbers, or add new ones.