No achivements section at the profile
I have two devices with very similar parameters and installed Duolingo for Android v.3.45.1. OS versions 6.0 and 6.0.1 respectively. For a long time the appearance of the app was the same. But about the month ago on one of the devices (6.0.1) an achivements section appeared at the profile page but on the other (6.0) do not appeared.
Here is how this page looks on 6.0 device (the page named "Friends" here): https://lostpeace.ru/Duolingo_bug_1.jpg
And here is how this page looks on 6.0.1 device (the page named "Profile" here): https://lostpeace.ru/Duolingo_bug_3.jpg
I'm sure that the reason is not in minor version difference.
Have you finished your tree?? I finished my tree so achievements don't appear on my profile anymore XD