K2 modules missing in Module Manager

Hi!
I cannot find the following K2 modules in Module Manager (even if they appear to be installed in K2 Information tab):
1. K2 Login
2. K2 Users (ATTENTION! NOT K2 User but K2 Users)
3. K2 Content.

I need to use this modules, but I don't know where to find them.

Regards,
Mihail Berejan

Did you search on existing modules list or in list which is visible after click 'New' in module manager?

Did you search on existing modules list or in list which is visible after click 'New' in module manager?

Good question! I checked in the existing list, without trying the 'new'.

Thanks a lot!