Hi,
I'm doing some experiments with the board in the subject and I noticed (after hours of trials unfortunately) that the picture in the manual shows the USB-OTG#1 and UTB-OTG#2 connectors flipped with respect to the schematics.
(https://i.imgur.com/X4bdIzI.png)
(https://i.imgur.com/0nAmIwU.png)
The USB-OTG#2 connector should be the one near the DC power connector.
Sure it is wrong, the white print behind each connector shows it too. If you look in the picture you embedded it is clear that the bottom connector has USB_OTG2 printed behind it.