Hello again, @Bruuske.

Thank you for coming back and sharing this helpful information here in the Community. 

I'll make sure to pass along feedback as well regarding this issue to the appropriate channels. I appreciate your patience in trying to resolve this error when sending invoices. 

That said, you can also send feedback about this error by going to the Help menu and by clicking Send Feedback Online.

Please don't hesitate to visit us again in the Community if you need anything else. I'm just around the corner to help. :)