If you've backed up your ETH Wallet, you can recover access to it by importing/adding it within the app. The process for doing so depends on how you backed up your Wallet.
Cloud Backup
If you backed up your Wallet using the cloud option, you just need to sign in to your Google or Apple account and enter the master password you created when you backed up your Wallet:
Reinstall the app
From the home screen, tap on Settings <INSERT ICON> in the bottom-right corner
Sign in with Google or Apple
Enter the master password you created when you backed up your Wallet
See AlsoPrivate key lost or deleted
This will restore access to all of your wallets and digital assets in the Bitcoin.com Wallet. It's that easy!
Manual Backup
You can add any supported wallets you've previously backed up by entering the 12-word passphrase for each wallet.
From the home screen, tap the "+Add" button.
Select "IMPORT WALLET"
In the "Recovery Phrase" tab, choose the wallet type you'd like to import (In this case Ethereum).
Enter the 12-word recovery phrase or, if you've backed up your wallet in QR-code form, you can scan the code.
