When you view a bank account you are limited to the last 2 years of transactions, this may be why you aren’t seeing any.
If you go to the search and set the date range, you can set it from as early as you like to todays date, this should then show you what you are missing?
You must be able to see credits and debits to that account. The balance will be the difference between the two. You’ll need to reconcile each credit and debit to see where the balance lies.
Yes that’s what I’ve done and it seems as if there is an anomaly in 2016 which isn’t making sense as it wasn’t there before. I did use an Accountant once this year and I’m just waiting back to hear whether it’s something they altered.