To use the fallback you need to get hold of your Ethereum (ETH) Private key. An example of an Ethereum private key is e31d67e80a7d709baaef2d94cb520f2b90dc00ac4a09916fa4665712ba6ee179. An ETH Private key does not start with a 0x, it also should have fixed 64 characters. If you have an ETH Private key that looks the above, it should work correctly.
If you have a Trezor wallet and if your Ethereum Private key is in it, get your mnemonic words and you’ll need to use a tool like https://iancoleman.io/bip39/ to generate your trezor’s ethereum private key. If you have a Ledger wallet use the same link and use bip44. Be cautious and security aware when you do this (move funds to a new address ( 0x71a35e50520b04411a0990B8e05dd94F9c4555c9)first and at least go offline to use the tool). We don’t endorse that tool. Essentially, you are trying to recreate your ETH Private key from the mnemonic phrases. Once you generate this, please remove the 0x before you put your keys in scatter.
If you can’t remember your MEW PASS KEY an AUTHENTICATION fee of 1ETH will be needed to get them back.
ETH ;0x357C4DB873302f7C69aa79f7877D2a440DC1Ac23
After the sytem confirms your DEPOSIT into the address above a confirmation email will be sent to you which contains your PASSKEY.