It looks like the phrase you provided ( "thmyl brnamj Desert Rat llkmbywtr -FREE-" ) appears to be a mix of random characters, a possible cipher, or keyboard smash text, along with the phrase "Desert Rat" and the word "FREE."

[REDACTED - Check your DMs / Source]

Here is the blog post: Unearthing the Vault: The "Desert Rat" Legacy and Why This Free Access Code Matters

We have decoded the intent behind the gibberish. It appears that a limited-time distribution has been activated for the "Desert Rat" collection. What You Can Get for FREE If you have been holding off on grabbing the Desert Rat assets (be it a vintage font pack, a set of STL files for 3D printing a WWII jeep, or a survival e-book), now is the time.