When you Imported the Scripts into the Action window you need to have it on Main for step 3&4
and on MIDI Editor for step 5
I will edit that.

3. Reaper > Actions > Show Action List > Import >
REAPER\KeyMaps\ReaTrak Scripts.ReaperKeyMap

4. Reaper > Actions > Show Action List > Import >
REAPER\KeyMaps\ReaReaTrak Custom Actions Required (Main).ReaperKeyMap

5. Reaper > Actions > Show Action List
Section> MIDI Editor > Import >
REAPER\ReaTrak MIDI Editor.ReaperKeyMap