EDIT: The issue has now been resolved. If you do not see the Daily Challenge, please force close and restart your Empires & Puzzles application.
3rd of February, 07:00 AM UTC: There is a known issue with the Path of Valor daily challenge not loading for players. We are currently investigating the issue here. We will update this announcement with any new information.
We hope to fix this issue as soon as possible. Our apologies for any inconvenience caused by this issue!