The result of
sudo dpkg --configure - a is:
No package named ‘a’ is installed, cannot configure
Then we ran the
apt-get, it took a while and seemed to work.
After we re ran
sudo dpkg --configure - a but same message as above.
We re ran
sudo apt update, then it worked and told me 8 packages we ready to install or update.
After we tried again to install apps from Kano but we had the same sync error.
I don’t remember to have put parental control, but I could check the settings if you tell me where.
Thanks again for your help