Products as billable items don't show at Income by product report
When checking the 'Income by product' reports, we have sold several product's but some of them all pile up as 'Billable items'. I don't understand the logic behind this, because then you have no financial insight in what have been sold.
Why would you have to select a product when creating a billable item, if it doesn't do anything (nor in the cliënt section, nor in the reports).
Please fix this, because now the income by product report is kinda useless, even though it's supposed to be super useful!