The Commerzbank does not submit Easy Access Saving Accounts via the HBCI interface.
Therefor please setup the Commerzbank (Web) login. You should see your Easy Access Saving Account there.

You can hide the accounts that are displayed twice in the Commerzbank (Web) access:
- iOS: 'Accounts' > 'Select account' > 'Select dropdown next to account name' > 'Hide account'
- macOS: 'Accounts' > 'Select account' > 'right-click on the account name' > 'Hide account'
- Android / Windows & fireOS: ‘Accounts’ > ‘Select account’ > ‘tab the three dots next to the account name’ > ‘Settings’ > ‘Hide account’