DDJ-1000 and 2x Reloop RP 8000 MK2 - problem with 2 same model midi devices being recognized as one

Hi

My set up is DDJ 1000 and 2 Reloop 8000 MK2 turntables with midi mappable pads.

I am on Rekordbox 5 and trying to map 2 x RP 8000 Mk2. The turntables have 8 pads each in 4 modes. The issue I am having is rekordbox recognizes them as the same Midi device, even when they are set as separate decks (3 & 4) on the turntable. This settings makes them send different midi codes for different pads. For example Deck 3 pad 1 sends 9614 and when set to Deck 4 it sends 9714.

So in summary I am not able to get the RB to receive MIDI signals from 2 devices at the time. It is always one at a time and when unplugged and plugged back in it confuses deck 3 with deck 4.

When 2 turntables connected, none of the midi signals is processed but pads illuminate on both turntables. If I remove the deck 3 turntable USB, it will not disappear from Rekordbox until I unplug the deck 4 USB. 

How to make RB to tell the difference between them two so I can map them? I think the issue is Rekordbox does not see them as a separate devices, therefore, when I plug the 2nd turntable it is not recognized in RB (Connecting RP8000MK2 does not show in the bottom).