I had the same thing yesterday, it was showing me the old red daily challenge chest but received the deluxe chest instead, it's weird that it shows incorrect to some but to others it shows the correct chest whilst using the exact same client.
Just the weekly maintenance (Every Wednesday at 4:00 a.m. PDT / 11:00 UTC / 13:00 CST)
Always check here for the latest news on changes etc: https://forums.bladeandsoul.com/forum/412-news-and-announcements/