Users need an "identity" to use imToken, but an identity can only be recovered by the Mnemonic. So, users who only backed up the private key/Keystore will need to "create identity" and then import the private key / Keystore recovery wallet.

Import private key / Keystore:

1. Create an identity and enter imToken
2. Click "My Profile" in the lower right corner
3. Click "Manage your wallet" - "Add wallet"
4. Select the wallet type
5. Click "Import" to import the private key / Keystore
6. Wallet recovery success

Note: The corresponding password is required when importing Keystore.