Während Blizzard leider weder hier noch im amerikanischen Bugforum auf die Beschwerden eingeht, haben sie es zumindest auf Reddit gemacht:
https://www.reddit.com/r/hearthstone/comments/cnk3f9/no_quest_today/?sort=new
Customer Support
114 points · 4 days ago · edited 21 minutes ago
Greetings, all.
This is an issue we’re currently investigating. I will update you in this thread as soon as I’ve more details. Appreciate your patience!
Update 8/11: We’re continuing to investigate this issue, but as of yet do not have an ETA as to when a fix will be implemented. I’ll keep updating this post as I get more information!
Update 8/12: A hotfix has been implemented to resolve this issue. Please let me know if you experience the issue again.
Falls der Hotfix funktioniert, sollte das Problem also ab heute behoben sein.