Recently we changed the IP address of our AAA server and we can no longer access to user-Changeable Passwords interface. Where do I change the IP address upon ACS
What IP address have you changed? Looks like you are running UCP and ACS on two different servers and you have changed the IP address of the server where we have UCP installed. If that is the case then you need to change the ip address on the ACS >> Network configuration >> search of OLD UCP client/Ipa address >> Delete the old entry and add it again with new ip address.