Hello and welcome to the forums @Raegore and thank you @Centeotl for moving this one over,
I am sorry to hear you seem to be missing a purchased item.
This scenario will require our tech team to look into your logs and follow up directly with other possibly sensitive account information that is best not posted on the forums so it would be better if you could please create a web ticket by going to Contact Us | Amazon Games.
Please, do not hesitate reaching out to live support to have this looked into.