Hello,
If your manager credentials are wrong, you won't see any updates on buttons, no mailbox status and actions won't work. As the manager connection is something a little more complex than just a user and a password, mostly when dealing with multiple servers, it is up to the user to set things right. fop2 will not indicate visually on those errors because of that complexity. There are even more levels of complexity: when manager permissions are not fully set, or event filters or mask are in place. It is up to the administrator to configure things correctly, fop2 is not a configuration tool. Finally, a manager connection issue IS NOT a sip or device state. You can disagree, but there is a strong "semantic" reason: device states are device states, nothing more, nothing less. A manager connection problem is not a device state.
There are ways to determine if your manager config is ok:
/usr/local/fop2/fop2_server --test
Run that in your 1.4 install and look at the output.
Best regards,