I cannot see some of my previous orders

You will see a list of transactions performed within your GoldPass account, by selecting "View Statement" for either AUD or GOLD, in the main wallet screen by selecting this option from the menu. The statement also will appear by tapping the value of the holding on the wallet screen for each asset. There is a separate statement for GOLD and AUD. Transactions performed in other Perth Mint systems such as Depository Online will not be listed within your GoldPass Account.
See other articles in Holdings, My Account.