The keys to each of your currencies are saved separately to ensure maximum security.
To be able to view your keys, go into the Backup and Keys tab at the top of your screen and select Export by Currency. You will see a list of all of your currencies. Find the one whose key you want to save and click on it. In the drop-down menu that opens, select Show private keys. You will need to enter your password again.
If you choose to copy your private key, please make sure to store it somewhere highly secure. Do not share it with anybody, not even Guarda team members.