Valor Set Issue

[Enkidoh]

Don't worry, it's not a bug or anything, but merely just an example of content moving on. The original Job quests naturally ended at level 50, and the 45 quest was designed to reward you four pieces of Artifact Armour (AF), with the final piece given to you for completing the final level 50 quest (this is the 'Gallant' set).

However, with the level cap being raised with the Heavensward expansion, SE added the 'AF1.5' set (the 'Valor' set) to the Job quests as well which was formerly gained through trading 'tomes of mythology' from a vendor in Revenant's Toll - this more powerful set was then given to new players doing their Job quests after HW's release so as to be able to help them 'catch up' to those who have been playing since the beginning.

So don't worry, it's just SE giving you an extra helping hand and older content being somewhat left behind.