I know, I already fixed it. Im just waiting until I finish Dynamax to post any new updates.In "Plugins > [DBK_004] Z-Power > [005] Battle_Move.rb "adding the line in bold fixes it:
#-----------------------------------------------------------------------------
# Returns true if this move is a Z-Move or a Z-Powered status move.
#-----------------------------------------------------------------------------
def zMove?
return false if @id == :STRUGGLE
return false if @id == :CONFUSEDAMAGE
return GameData::Move.get(@id).zMove? || @status_zmove
end