I installed CCM 4.2(3) as publisher and subscriber and configured extension mobility as per recommanded method. Issue is when i press service button, i found Extension Mobility service but when i select this service, it gives me error  and i am not prompted for username and pin.I configure everything properly mention on study guides etc.
Please suggest me what should i do.
One thing more, please tell me how can i configure extension mobility service in redundancy mode so when publisher goes down, subscriber take the role.
Hoping for your prompt relpy