Mnemonic phrases, or seeds, allow you to create and manage a great number of wallets with a single human-readable password.
Restore Wallets from Backup
If you have already used Magnum, you must have a Backup. Once you've provided it, you can continue using the wallet as before.
Import Wallet from a Device
Use other connection methods, this method is temporarily disabled
Protect your wallet
Do not forget to save your password, because it cannot be recovered. You will need this Password for easy access to your wallets, as well as to decrypt your Backup file if you wish to restore your Magnum Wallet in the future.