How to spend money wisely<br>Create a budget. Track your spending and income to get an accurate picture of your financial situation. Save receipts or write down your purchases in a notebook as you make them.
You should save your receipts in a notebook
The context says to save receipts, or write down your purchase in a notebook. It does not instruct you to save your receipts in a notebook, so the statement is neither correct or incorrect. The system probably found it hard to understand the or statement