I am now totally confused. I seem to have two password - one which was emailed me when earlier today I was asked to sign up by the website and sent an email with a complex set of letters, numbers etc. I did this because a password I had chosen a couple of weeks ago had not been recognised.
Yet later, accepting an invitation to go to a new WordPress site, the emailed password did not work, but the one I had chosen 2 weeks ago did. For the same user name, for 2 different parts of the WordPress sirte, I therefore now seem to have 2 passwords. I have been searching for the 'Profile' link on the site to see if I can change the emailed password to my chosen one - without success.