App doesn't even work over WiFi... again. Gems cannot be cashed out, i.e. your money is locked in. This is a centralised platform. Veve can at any moment do anything they want to any NFT. For example, swap it for something else, as did this with Ultimate Fantastic Four #21. It was to correct a mistake, but it demonstrates the issue nicely. The app's search facility on the secondary market is almost useless. They can lock your account on a whim and there is nothing you can do about it.