Virtual products problem

[colorful-ant]

I seem to have problems with the ordering process. It doesn't matter whether I just want to buy a PDF or together with a real product. Every time I get stuck in the ordering process (5 steps) when shipping, because the message comes up: "Please accept cancellation of virtual (download) articles first". However, I cannot see this checkbox anywhere.

TB 1.1.0 as well as 1.0.8 and 1.0.7

A complete description including a possible solution can be found here in the forum
https://forum.thirtybees.com/topic/3271-virtuelle-produkte-und-aeuc-modul/