I just verified that the Balance in the app differs from the downloaded in excel (csv).
Mainly seems that the PENDING payments appear on the App making the charge immediatly but if you download the statement they don’t appear and the balance reflects that.
Beside that fat seems as well that when the transaction pass to COMPLETED it charges again in the App balance as it does (correctly) in the statement.
So in the end you may have a negative balance in the App and not in the downloaded statement.
This is annoying and I did several times try to explain to the support but always receive the same answer “You will not be double charged”…