On 3/26/21 I couldn't get this game to work on my OnePlus 7 Pro. Finally got it running last week on my Pixel 6 Pro. Now all the decks and cards I've owned since before November 2019 are GONE. Customer Service wants receipts or other proof of ownership of said cards. I've never had to have receipts for digital ownership prior to this. I won't spend another dime much less waste my time on this game. The callous mismanagement of the developers need no further compensation.