If he has dlc try completing that to if not go over it a few times or look if secret items count plus arcana plus you can use the spelll
Try resetting your xbox if not go to the queue page and launch vampire survivors through tides of foscari icon if not tho to tides of foscari store page and see if something went wrong such as out of storage, unable to obtain bank info and even it just turns out you clicked off before completing the transaction