Hi Julian
I recall having similar problems several years ago, solved via Admin when they sent me a new password - a muddle of letters and numbers which is therefore difficult to remember (for me, anyway!), but which works. I don't think the problem was related to my switch to Mac, and it sounds as though you are still PC-ing? Hope you get it sorted, your contributions to the Forum are much appreciated.
Michael Rogers
Storm Petrel 'Cadenza'