[2022] Cannot complete Mastery Challenge!

Hey!

Hoping that someone can help me out. Ever since I started the Mastery Challenge, as my power level increases, so does the suggested power level of the various locations and lands throughout the game.

This has not impacted upon the gameplay so much, apart from I cannot complete the Odin Mine Hideout Trial of the Raven.

I cannot assassinate a single enemy. Any assassination does not kill them in one attempt and means that I cannot even get the bronze medal.

I am not sure if the two things are related but my game seemed to bug, once I started the Mastery Challenge.

Thanks.
Kubs