If you still have the Uniswap Wallet app downloaded, you can delete the wallet iCloud backup password and create a new one:
1. Select the “Settings” Icon. Next, select your wallet, then select “iCloud backup.”
2. Select “Delete iCloud backup," then select "Delete." This will delete the current backup.
Next, you will reset your iCloud backup password:
1. Select the “Settings” icon. Next, Select your wallet, then select “iCloud backup.”
2. Select “Back up.” Next, set a secure password. This should be a password you can remember.
3. Once completed, you will see a confirmation screen.