Hello there, @erwintire.

Thank you for reaching out to us with your concern about printing through a thermal POS printer.

Currently, the QuickBooks Online ROW version does not support POS. What you can do as a workaround is to print manually. 

Meanwhile, you can check on the supported apps available in different regions. Just toggle the country to the right one.

Fill me in if you have further questions about printing reports. I'm just a post away and willing to help you in any way I can. Have a great day ahead.