I installed version 11 today. The installation went OK, and the first time I started the program,  it asked for the activation code. I entered it and it started OK.

I shut it down, and when I opened it a little while later, it asked for the activation code again.

This happened again, so I quickly created a test site and saved it, thinking that the activation success might only be saved when the first save is done.

It saved OK, but when I opened it again, it again asked for the activation code. Also, each time, it requires admin authorisation to start.

There are no error messages...