Who did you call...which Customer Support...Verizon..or Isis? I am having the same issue. I was with ATT, used the app once. Now the wife and I ported over to Verizon and I can't log into the Isis app. It keeps saying " Does not support 2 MNO" then when I log into Isis online, I get the message to contact ATT, instead of my new carrier Verizon. And of course ATT, has no clue.Nah. I tried to call CS again and got someone within seconds on the phone. I got it fixed. Now it's going to drive me nuts not knowing what my old password was. I made sure to set up a security question too lol
Thanks for your help or anyone's help with this.