Sometimes, folks run into weird issues sharing, saving, or syncing their decks. If that happens to you, I recommend making sure that you're running the latest version of Haiku Deck available in the App Store. If that doesn't resolve the issue, give these steps a try.
If you're still stuck, then I'd definitely try another network, since firewalls and other network settings can present issues with publishing and updating sometimes.
If that doesn't help, then I'd try duplicating the deck with the steps in this article.
I hope that the steps above help! If they don't, we're happy to keep helping -- just click the "Submit a Request" link at the top of right corner of this page and let us know.