Hi Mary Lou -
I'm not using Flex Events yet, but am guessing that you might be utilizing New Reports and trying to find the report that includes the invitee information as well as any custom questions you created.
In new reports (Event) and when looking for custom registration questions, I typically recommend that you start with any report that has the word "Details" in the standard report name (see screenshot). If you go to Common Reports -> Invitees and Registrants -> Invitee and Registrant Details will probably get you what you want. Those seem to be the ones that allow you to include your custom registration questions into the report.
Hopefully, this will help you pull what you need all in one report.
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Becky Yousif
Meetings Technology Analyst
American Express Meetings & Events
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