In PeopleSoft Tab, the Advanced button is grey out for Developer user.
User Class from Other User Information screen
WORKAROUND:
1. From User Options | User Maintenanece
2. Highlight the Developer User ID, click the Other Information button
3. Select the Service Domain & User Class=Developer and click the Delete button. Click Apply button.
4. Click New button to add the Service Domain & User Class=Developer. Click Apply button then OK button.
5. Logout of Stat Windows Client and log back in to verify.