I didn't get in on the survey and got the old box in the A/B test, but I would 100% prefer the white one with the illustration for my subscription. I order my candy to the office to share and people usually see the box from Japan and are curious so they ask me about it and I tell them about the candy subscription.
The white box would be better advertising for you in my case :)
I'd suspect much different results if you conducted the same survey but indicated that the white box may result in cost increases to the customer. I suspect they wouldn't care about the box if it meant a higher cost.
The white box would be better advertising for you in my case :)