I haven’t been able to purchase any crystals or anything on the shop ever since I started playing, every time I go to try and buy crystals nothing happens when I press purchase. Sometimes the screen dims out or greys out like it’s trying but nothing happens.
Hello @Tyler.Westerbeck,
I hope you are having a good day! 
I’m sorry to hear about the issue you’re facing when trying to use the In-game store, every time you click to buy something and nothing happens.
Lets try few troubleshooting steps to check if it resolves the issue,
Lets start with verifying game files on steam Steam Support :: Verify Integrity of Game Files
Once this is done restart your game and try to make a purchase.
I would also suggest you to follow the troubleshooting steps mentioned in the link below -
If you still have the issue, please create a web ticket by going to Contact Us | Amazon Games
I hope this information was helpful.
Take care, see you in Arkesia!