Has anyone been able to connect one of the LTE (Cat1 or Cat-M) XBee's to hologram.io's network? Hologram tells me that that any AT&T or Verizon device should work on their network, but I cannot get a connection. I am able to connect a 3G XBee (AT&T) with their sim card, but not the LTE module. I did successfully connect my LTE-M XBee3 module with the AT&T sim from my cell phone, so I'm sure the module works, but I can't figure out the right settings for hologram.