To redownload the deck: Please try resetting your local changes. To do this:
Go to browse in your Anki → at the top click on ankihub addon tab → press reset all local changes
This will restore everything to what AnkiHub has unless you have specifically protected those fields
The cards are just suspended, you will need to unsuspend them to do them. See this: Why does my AnKing Step Deck have 0 cards?