Error When Trying to Add Nighthawk S8000 Switches to Insight Account

I'm trying to add 3 Nighthawk S8000 switches to my Insight account but am getting errors (different upon which method I try) trying to do so.   In the Insight app, my 3 switches appear under "Insight Manageable Devices" with a status of unclaimed.  If I click any of them, I'm taken to a page where there's an "Add Device" button. After clicking that button, I'm taken to a page to choose the location.  I then choose the location I've already created for my Orbi Pro devices, which results in the error "Device Name cannot be added.  An error occur, try after sometime" with a purple button labeled "Skip this Device".  I get this same error trying to add all 3 switches.  

If I try adding the switches via the Insight Cloud portal by entering their respective serial #'s, I simply get the error "A network error has occurred. Try again in a few minutes.".

Is there some reason I'm unable to add these devices or is there something I'm doing wrong here?

Thanks,

Bill