I just uploaded a pack a few days ago and everything went smooth. today, there is a different set up. web page was black and orange, now it's white and orange. Everything is moved around and the only way I see to click any attributes is for each induvial item.  however, It looks like that is for if I want to sale my content separately. But, I don't . I want to sale it as a pack and I need to click the AI GEN tab. 

Question was answered by customer service but I will answer here for anyone else wondering.  For now, it is missing on the new layout. You must click to view the old version. The button to click to view older version is at the bottom left hand side of the page.