Share your decks as a short code: copy it in the deck builder, paste it under Decks to build the same deck.
Other changes
The deck builder has a Deck code button. It copies the deck's cards and jokers as a short code; the look (card back, board) is not part of it.
Under Decks, Import code opens a deck code in a free slot. Check it and tap Save, nothing is saved before that.
Cards you do not own yet are left out and listed, so you can fill the deck with your own cards. A joker above your level is named and its slot stays empty.
Mistyped, cut-off or foreign codes are refused with a clear message, and so are decks that break the deck rules.