Thanks to so many of your encouraging messages of support, positive suggestions, and (my own) persistence, I've at last got round the biggest problem I've had since last mid-week - (hooray!) - namely. an inability to access the @ sign, now solved as you can see. I'm able again to send e-mails to ask for assistance plus everything else.
If anyone is curious as to know how we've arrived at this point I won't repeat it all here, but it's set out in my previous post under the last comment of 'Anon'. At least I can now return to some semblance of 'normality' (in these abnormal times), even if there's some measure of hiding still some measure of inconvenience of doing so, which may not be apparent, but still small beer when set against the far greater urgency of dodging that blasted virus!
Meantime, thanks again to all who offered their help whether it worked or not. Warmest of hugs all round!
And now I'll probably spend the rest of the day whistling 'Gaudeamus igitur' !