Hi, No the padlock is unlocked, thanks anyway.

But I'm pleased to find that It now works . I can't identify what I did was different, unfortunately.
For the benefit of the original poster and maybe others to follow, because it is tricky, I'll outline what I did.

Go to Plan and select 'Select ...

This didn't work. Is someone able to explain it in another way that is easier to understand please? I am using a MacBook Air.
Thank you,
Matam