Steps to clear out saved passwords

1. CHROME
1. Open Chrome
2. Click on the three little dots on the top right of the Chrome Screen
3. Click New Incognito Button (this should stop your browser from prepopulating the credential area with old information)
4. Go to the data.mncm.org
5. Type in your username and password
2. Microsoft Edge
1. Open Edge
2. Click on the three little dots on the top right of the screen
3. Click New InPrivate Window
4. Go to data.mncm.org
5. Type in your username and password

If you are able to login, your browser is retaining prior credentials and inserting/swapping out the new ones with the old ones.  I would contact your IT department so they can change the setting on your browser or plugin that might be doing this.