Struggling with google calendar integration

I’m really struggling with the basics of the google calendar integration and I’m hoping someone can help.

I’ve been watching all of @wisebubbler’s videos, and it seems I’m blocked by something simple which I cannot work out. I’ve got the “redirect URI” matching EXACTLY everywhere (in google console, in the plug-in, and in the workflows), but when I go to initialize, I keep getting the following error message:

There was an issue setting up your call.

Raw response for the API
Status code 400
“error”: “invalid_request”,
“error_description”: “Missing parameter: redirect_uri”

Share screen shots of your API connector setup, the workflow action you use to navigate user to Google for authorization and the workflow action setup to capture the URL code to then run the get access API call.