yesterday, I completed deskaluda twice and I saw that I had earned some reliq accessories, as written in the chat, but, contrary to what is written, I have not earned at least two reliqs! (the one that is in my inventory was already present)
Have a warm welcome to our Lost Ark Forum,
I do appreciate the time taken to make this report I do apologize about the unexpected experience you had within your play-through.
I do recommend you to run the old reliable one: Steam Support :: Verify Integrity of Game Files
After the step above: try rebooting your PC as well as LA.
If that does not recover the items then I need you to contact CS live channel, they will have to raise you a ticket in order the specialist team check your entitlements.
Support for Amazon Games. Read support articles or get game & account help from Amazon Games support reps.
I hope this information granted you gives a great and helpful insight.