Hi,
I guess, that when you say, that you cannot do anything, that you see a log screen?
In my case, this screen was a little weird, as the clock wag not fully visible and I could not see anything change until I logged in.
And the login is done as follows:
Press Space
Then enter your Pin
Then press enter
You should now see your home screen.
If not, begin again with pressing space and so on.
Sometimes I needed three tries, but I got in.
Maybe that helps?