BaseBox2 Keep restarting on 30meter (Cat6) cable with POE

I installed Basebox2 and tried to place it 30meter away from the POE and data source with cat6 cable but the router keep on restarting. What can I do?

what is the voltage of the PSU that you use in the injector? what injector do you use?

The Voltage of the PSU is: DC 24.0v with 0.8A, I use Mikrotik Gigabit POE injector

The Voltage of the PSU is: DC 24.0v with 0.8A, I use Mikrotik Gigabit POE injector

The router is no more booting, It only show power led, Eth led and the rest led lights are fast blinking.

No reply:(
I have always been having this problem with Basebox2 units .The box keeps on rebooting if I use a cat6 cable more than 8meters in length , tried different cables and different basebox units.I use the same POE injector and powersupply supplied with the device.Had to switch to ubiquiti because of this problem .Still have 2 basebox units lying with me , not being able to use them.