Background: We are a new organization that will provide online courses to schools. Teachers want to use Zoom for video conferencing. I am an engineer who is trying to enable Zoom LTI pro integration with Canvas.

Issue: I did enable Zoom LTI Pro and got everything to work if the teacher has an email address within our organization's domain. However, if the teacher's canvas email address is gmail.com, then they get the following error:

The instructor's email(xyz@gmail.com) is invalid(2216).

Error Code 2216 - v=2.0;clid=aw1;rid=INT_156badd4e9949de3

Do we have to create an email address for teachers within our domain? What is our best option if we don't want to do that as it's not a scalable solution for us? Thanks.