Platform, device version and operating system:
Android
Screenshot or image:
What you were expecting to happen, and what actually happened:
I want to get the new achievement, but it seems to not update yet. From what I read, console is working fine, and Steam, which share the server with Android/iOS device, is working correctly. So it’s just Android/Google Play right now. No idea about iOS.
How often does this happen? When did it begin happening?
Everytime I check the achievement list since updating the game to 6.8 version.
Steps to make it happen again
Check the list.
Side note : I didn’t play explore yet, but 5 Delve runs, so 1-2 Wandering Merchants for each. Lots of Genie encounters, which doesn’t have an achievement, and not enough Daemon and Merchant encounters to unlock the achievement, even if it was active. But I did meet the Angel once, which should unlock it, but nothing happened, as the list didn’t seems to get updated yet.
And personal opinion, no rush on the fix, as it’s not so important, and I won’t farm much until new class arrived, which is still 30 hours away.
Update : Seems like it was live now, thanks!
Last Update : 3 days later, finally got them all! Everything is solved and fixed!
2 full-delve run and 10 crowns chase daily doesn’t seems enough. Want to play more to get more offer, but not much reason to. 
