Error linking account and getting authorization ID

[JCrew7384]

I have a Client ID, Client Security, and Project ID per the steps. I am using the correct link, I replace Project ID and Client ID in the address. I see my cameras, and enable them. But on the resulting page, I get an error. Not sure what is causing this. Does it have to do with setting up the project and clicking like Web Server over Desktop App over iOS app? I don't remember which one I chose

Access blocked: This app’s request is invalid

You can’t sign in because this app sent an invalid request. You can try again later, or contact the developer about this issue.
If you are a developer of this app, see error details.
Error 400: redirect_uri_mismatch