Norton Family Minder crashes

After several days of problems with Norton Family Online website (with no clear information from Symantec !!!!!), this weekend I logged in again (with breaks, but with some patience it was possioble to use it). After login, it announced I should upgrade Minder on protected computers. OK. I did an upgrade, it looked as a working, but when I came back in the evening, I realized my children spent a nice day with a computer. Norton Family software crashed after several minutes on both computers !!!! I don't want to complain, because the software is freeware, but to pay for it, I would be very angry. My trust for Symantec prioducts is very close to zero :-(