We've been testing the new app on an iPad with an item that had multiple options and parents could pick more than one.
Picking the item was not a problem. However, if I'd wanted options a and c from the list it is little cumbersome as when I added the first item to the basket I got options to "continue" or "checkout". Clicking "continue" sent me back to the start of the "Accounts and Products" section, meaning I had to go into Products and find the item again. Not sure how often those sort of multi option products are used in this way, but it might be worth flagging to the development team. Perhaps three buttons "Return to item", "Return to product list", "Checkout" might be better.