API Access Issue

[John Woodside]

I am using Postman to access the Jira API.  I set up the token and can successfully call the API and return the announcement banner using my username and the api token.  There is another account with the exact same permissions as me, but when I use this person's username in the call, I get the  "Client must be authenticated to access this resource" error.  I also tried setting up a new api token and trying that when using the other person's username, but I get the same message.