To edit the details of an existing offline account, follow these steps below:

In the iOS app:

1. Select the offline account from the list of accounts.
2. Tap on the account name above the transaction list or use the context menu in the account list (long press on the account cell) to open the account settings.
3. In the settings, you can change the account details (name, account type, currency) and hide or delete the account.

In the Android app:

1. Select the offline account from the list of accounts.
2. Tap on the three dots in the top right corner of the transaction list and select "Settings."
3. In the settings, you can change the account details (name, account type, currency) and hide or delete the account.

In the macOS app:

1. Select the desired offline account from the account list.
2. Right-click on the account cell or use a secondary click (e.g., a two-finger click simultaneously). Alternatively, click the button with the account name in the top left corner and select the "Settings" tab.
3. In the settings, you can change the account details (name, account type, currency) and hide or delete the account.