Same error with all color challenges. I've attached a screenshot of editing the white deck. All cards are red and appear invalid. I've opened many packs with promo codes. Does that have anything to do with the deck error? I haven't added or removed any cards to the deck.
Same error with all color challenges. I've attached a screenshot of editing the white deck. All cards are red and appear invalid. I've opened many packs with promo codes. Does that have anything to do with the deck error? I haven't added or removed any cards to the deck.