Teensy to Anodrid

[frohr]

Hi,
I have Teensy 4.0 on my PCB. I need use military Amphenol USB (on pictures is normal USB for testing) for connection so I made easy reduction from Teensy micro USB to female USB A. Now I want communicate with Teensy. If I connect it to PC it works well. If I connect it to Android mobile, it can not find the device. If I connect Teensy to mobile directly (via micro usb), it works well. If I connect Teensy to mobile from USB A via usb hub, it works well. Where can be problem that it does not work from USB A to mobile? Thanks for help.