Once your cursor is below the conten lenght row, you should type
Location
This will become a response header key, like content-length above. Then, I think you need to hit enter to finish editing the Key. The cursor should be under the Value column now
Then, under the value column, you should paste the URL you copied before (the one that looks like "https://login.live.com/oauth20_authorize.srf?lc=1046#access_token=...". With it in your clipboard, you can do that by going to the menu bar above and clicking Edit/Paste when the caret is in that column.
The end result should be what is displayed in https://gist.github.com/user-attachments/assets/78f20893-9eb8-4ac6-965f-65ec6066fa26
Once it is in that state, press ESC to stop editing. I dont have the computer here to test, but once youve done that I can press "q" to come back all the way to the view with the flows - and there you can press "a" to unblock it to respond with the changes you just did (it may take pressing it a few times in sequence - the text in the flow line should go from red to black/white).