I posted this question to Microsoft support and have been waiting two weeks for a technician to help: "I am trying to get the volunteer engagement portal launched. As a user on the web site I am able to register, but the email verification isn't working. There's a message that I need to verify my email, but when I click through to do that there's no action to take. I also do not yet see the new user in Volunteer Management. The second problem is that on the web site there are random graphics (icons) not rendering, so there are little squares appearing in different places. On some if them I can float over and get a tooltip, but not always."
To be clear, a first level tech did help with initial troubleshooting but he couldn't find anything, and it didn't seem he was very familiar with the Volunteer Engagement app. He did show me how to review all of the emails in/out of Exchange, and we found no evidence that Exchange sent any emails to the newly registered user, not even a welcome email.
Does anyone know how I can trace the email verification issue, or what configurations to look at to resolve it? Or is it simply a bug in the deployed platform's code?
P.S. Is it just me or is the selection of (required) filters on these posts completely useless? ;)