multiple midifighter spectra issue HELP!!!

multiple midifighter spectra issue HELP!!!

Hello everyone, first time posting and I need some serious help. I got my second midifighter spectra and everything seemed ok. But when I log off traktor pro it doesn’t want to recognize my second unit when loging back in. Infact I have to go back thru the controller manager and reconfigure until it does the trick. I have checked the inport and out port. Any suggestions would be greatly appreciated. THX

hold one of the top 4 buttons down when booting it up. this gives the device a unique id.
had the same issue with my 3D + spectra and this did the trick