OTG issue (opens in new tab)

Hi guys, I'm trying to connect my device to a DAC via OTG using the bitperfect through UAPP app\. I have received the SMSL PO100 \(DAC\), I'm sure it works properly, it came with 2 usb cables: 1x30 cm usbc usbc and 1x90-100cm usbA usbC\. When I connect it through the 30cm cable to my phone everything works as it should, whilst when using the longer one it doesn't\. I suspect that my phone doesn't have the strenght to send feed the DAC that is powered via OTG\. The problem is not in the cable\...