This issue comes out many times.
On the Build - 29 February 2016
—Added Dragon crafting materials to the Tales Rewards!
—Added 150k and 240k renown rewards to Tales
—Added 15 new quests as Breaking Ties, Chapter 16: New Eyes!
—Added a Rarity filter to the Keep on Web
The problem is the renown rewards need to be added to each Tale. So when a Rerun of an old Tale is inserted in the Code, the DB programmer of the day, go back in time and copy/paste the last available version.
If is correct, we have the new Renown rewards, otherwise we have the old version.
A good mechanism should be to rewrite all the Tales with the right Renown Rewards, otherwise each time the new programmer sits on his desk, he is not aware to update the Tale with the right version (the previous one forgot to tell him during the task handover)
Sorry for the problem… I hope a final check on all the Tales should be done to have coherency in the Rewards.