Hello there, @RogLand18.

Thanks for the trust in resolving your concern. I can help write off your unpaid invoices.

There are a few steps to follow, so the amount will show into the bad debts account. Here's what I know on how to write off bad debt.

Since you're following the above steps given by @Lexiesmemere. Make sure to use the same account when:

Creating the non-inventory item.

Receiving the payments.

 Also, verify if you have use the bad debt item when creating the Credit Memo.

 Additionally, you can refer to the following article for other way to write off the unpaid invoices: https://quickbooks.intuit.com/community/Help-Articles/Write-off-bad-debt/td-p/203413.

This should provide you information on how to show amounts in the bad debt account. If there's anything else you need from me, feel free to comment below. I'm always here to help in any way I can. Have a great rest of your day!