If you give a card restored the same employer, the card will be assigned automatically to your personal online account in the My Edenred customer zone. You need to activate it in your personal online account. After logging in to your personal online account, click on "MANAGE MY CARDS AND WALLETS" and click on "ACTIVATE CARD".
If you have changed employers and have another card from a new employer, you need to create a new personal online account in the customer zone My Edenred with a new LOGIN NAME. You'll need an email address that you haven't used in any online Edenred account before.
If you wish to use the same e-mail address, you will need to change the e-mail address you used in the online account for the previous card to another. You will then be able to use the original email address to create a new account.