I would like to define my problem again:
Configurable article A has several simple articles A1, A2, A3
If simple articles A1, A2 and A3 contain the custom options, these options are not displayed in the frontend.
However, if the configurable article A contains the custom options and not the associated simple article, these options are displayed in the frontend. You can choose these options. If this article is in the shopping cart, the custom options will not be displayed. The options are also not displayed in the confirmation e-mail, because data from the simple articles are displayed everywhere and not from the configurable items. But A1, A2, A3 do not contain any options.
What am I doing wrong?
Many Thanks
Vladimir