Hi Carolin,Please make sure that you are using Campaign Digital content
editor (DCE) to design your delivery content. Might explain the
issue.More on this (and usage) here: Delivering with the DCETo check if
you are using the 'DCE' mode, edit the delivery properties / advanced
tab.Be aware that changing the edition mode of an existing delivery will
remove its current content - you must create a copy your delivery
first.Best,Alice