
Thanks to all who contributed suggestions. I tried 3 times to download MS 365 suite via my account. In each case the process concluded with a dialog saying installation successful but in each case the individual apps were simply not to be traced on my PC. However I found that I could open existing docs into the relevant MS apps. So I went back to the MS 365 listing in Settings/Apps and selected the "modify" option. This gave me the option to repair the installation which I did. I now have all the apps back. Phew!