Bornakk has just announced that they're currently rolling out a fix to our Midsummer woes that will reset all of the associated Midsummer quests. If you've been following along so far this holiday, it turned out that if you did all of your fire honoring/desecrating last year, you wouldn't be able to do it again this year. That meant you weren't able to get enough Burning Blossoms to purchase what you needed for the various achievements.
We expected a fix from the beginning, and we're all glad to see it happen. It didn't take them long to do it, and that's a huge plus. The more time we have to get the Flame Keeper/Warden achievements done, the better.