The report will list all the income statement accounts and you can remove all the accounts except the income & expense accounts that are assigned to the products/items.  Mine is simple because I use one income account and one COGS account for all products/items.  I set up a COGS account to track the cost even though these are non-inventory items the owner wants to see the cost in COGS.  Review your products/items list to see which income and cost accounts are assigned.  Hope this works for you too.