Hi! Thank you for your feedback, we'll look into the bug. As for your questions:
- The cross is intended to represent a die cube flattened on a surface, it is just a visual gimmick, the red/orange tabs allow you to switch between dice, as you can have up to four, each rolled individually and with its own set of faces.
- The blue icon is a shield that shows you how many shields you've accumulated that round.
Thanks for playing!