Thanks for reaching out about the N/A balances in your register, Michal. That issue points to a simple sorting issue. For QuickBooks to calculate a continuous running balance
Think of it this way: QuickBooks needs to read your transactions in perfect chronological order to figure out the running balance. If the list is sorted by, say, amount or check number, it can't do the math, so it just displays N/A.
Here are the steps to correct the sort order and restore your balances:
- Go to your Chart of Accounts and select the bank account in question. Then, click View Register (or Account History).
- Find the Date column header at the top of the register window.

- Click the Date column header. You need to click it once or twice until you see a small arrow indicating the list.
If you have further questions, let me know below.