Not sure why every now and then the kaa admin panel becomes not reachable from the sandbox installation on AWS. Sometimes I change the admin port from 8080 to something else and restart the kaa node then I am able to open the admin panel. But again after a day it again becomes unreachable. What could be the root cause of such an erratic behaviour?
Rebooting the T2 micro instance seems the only solution for now until I enhance the server config.