If uncertainty, such as an imkey being lost or damaged, occurs, assets can be recovered in any of the following ways.1. re-purchasing an imkey, importing a previously backed up helper at imkey, and restoring the wallet to retrieve the assets.2. import the Mnemonic Phrase into imToken or other wallets that support the BIP39 protocol, and restore the wallet to recover the assets.P.S. If you don't know BIP39, then just download imToken.