In old usermanager there was tab time left, and it was showing time that left for user. in new usermanager its not working, there is writen that user left 0s, but really user have time and he can access internet.

Use ‘Time Left’ instead of ‘Total Time Left’.
Time left not works also,
It have to do with the time between the Mikrotik Router and the User Manager Radius Time:
I am explaining how to configure it on Router Version 6.33.1:
on the router:
System ==> SNTP Client ==> (Enable and give your NTP information)
System ==> Clock ==> (Enable auto detection and chose your time zone)
from the User manager:
Routers==> Chose your router and in the time zone chose “Parent time Zone”
and try to create a new user and test it
I hope it will help
there is no smtp client option in system only ntp , i have configured ntp client , the clock works fine
however still time left is not working ..