I am trying to help you here, but you aren't making it easy.
Looking at the timestamps on the files I really doubt this is the 2020 version, but not wasting time to fully check (yet). The fact that your download has several
nulled folders make me doubt this upload, especially as you said it is untouched.
I can see the files that are encoded with ionCube and several have dynamic keys. This involves hand intervention to decode and therefore a lot of time!
@phpcore @slvrsteele and @White Devil - what is your opinion please? Worth spending time on, or a P.O.C?