Fake 32gb ultra card?

Then even if it isn’t counterfeit, it is certainly defective and the seller should replace it for you. Another thing you can do is call SanDisk directly. With the numbers on the back of it, they should be able to confirm its authenticity. If it’s genuine, they would replace it under warranty. If not, then you have it straight form the horse’s mouth that it’s a fake. And you can go back to the seller with that.