useless - neither equipment nor software or documentation

After trying unsuccessfully for several hours to put the device into another, as the default IP network 192.168.10.x, in operation, I packed it again and sent back.
Both the hardware and the software and especially the documentation are absolutely poor.
The change in the internal IP address was still possible, but nothing else.
The device did not recognize other devices and is not recognized by other devices.
Instead, I have then ordered an AVM FRITZ! WLAN Repeater 310 on Amazon.
The work for less than 10 minutes perfectly well on my own IP address range.