After you've logged into Online Banking, select "Additional Services" and then under Debit Card Management select "Turn Debit Card On/Off".
If the account has more than one card then you will need to indicate if you would like to turn off just one card or turn off both cards.
After you've logged into the Mobile App, click on the "More" menu in the bottom right corner.
Under Debit Card Management select “Turn Debit Card On/Off".
For each debit card on the account, indicate if you would like to turn it on or off.