BSFrance Lora 32U4 v1.4(Adafruit Feather 32U4 clone) CANT SLEEP

I’m wasted a lot of time to put BSFrance Lora 32U4 to the sleep mode.
Its pure board, powered by USB or Batt, it doesn’t matter.


I tried may be all existings libraries for it (<LowPower.h>, <avr/sleep.h>, <Adafruit_sleepydog>.). And the board still consume 30-40mA.

Adafruit Feather consumes only 0.3mA in sleep mode (described on their site).

What is it? What can i do?
Maybe its schematic or firmware error?
Thanks in advance.