I was signing up for a new account on Magic. I wasn't paying attention so I accidentally didn't change my date of birth, so it didn't let me create an account because they thought I was just born today. I changed that field but nope, it remembered I had told it I was 1 day old and it didn't let me change my mind. Delete cookies, nothing. Reload page, nothing. So I go into Postman and re-create the request and BOOM! I even got an access token for their API. This is why I love being a dev.