@Geddy
After 2 hours of chasing my tail, I finally got this figured out thanks to you. I went back and created a new gmail account and set up two step verification. Once I did that, I was able to get the option to add the ISY. The take away here, and maybe obvious for others, is you need the two step verification set up before you get the app password screen to add the ISY and generate the code.
I was at first concerned about setting up the two step verification for my original gmail account since I use that account for other things beside the ISY. I did not want to figure out how to use the two step each time I accessed my gmail on an older apple device. Maybe this is not a concern, but I thought I would just be safe.
Thanks again for your help.