Hi @john.morrow
Thanks for reaching out to the Zoom Developer Forum, I am happy to help here!
From the Zoom side perspective, you need a Redirect URL where you will be redirected once you have authorized/added the Oauth application within your account. You can use the home URL of your website and please make sure to also add it in your Allow List.
If you have any questions related to Stitch, you will have to reach out directly to the Development team from Stitch to help you troubleshoot their integration.
Hope this helps,
Elisa