The Reward for completing the Path of the Wavebreaker on the TI7 Battle Pass with over 40 stars unlocks a second style for the items in the Reef Kyte Rider set for Luna. However, even after using the style unlock on all 5 parts, some of them are still locked(3 to be exact). After some investigation in the dota 2 subreddit and in these forums, I learnt that this bug affects a lot of users and not only me.

luna 1.jpg The weapon is locked

luna 2.jpg The head is fine

luna 3.jpg The shield is locked

luna 4.jpg The shoulder is locked

luna 5.jpg The mount is fine

I really hope this can get fixed soon, especially considering the amount of people who have it. It's kinda annoying to take the effort to complete the quests to get a bugged reward.