The power analyzer tool was connected using the hardwar jTAG USB cable. I am not sure whether the problem is related to the backend (energy consumption cannot be measured for some reason) or to the frontend part (it is measured but cannot be displayed).
If there is any recommended java version I could try using it.
PS: The app log is completely normal, it just shows that the board was connected and some other info strings, no warnings or errors were displayed.
I really hope to get this problem solved asap, and thank you for your help.