Since I first started using FIREFOX and THUNDERBIRD many years ago they have been virtually trouble free, but after the most recent update of THUNDERBIRD the NEW MESSAGE tab has stopped working. I have not, and never have, changed any SETTINGS and I checked my default email address as suggested, and it is exactly as it always has been. The various HELP options that have come up on internet searches have not worked, so I would appreciate some 'plain English' step by step instructions on how the problem can be fixed.

I really appreciate Mozilla enabling me to avoid Google etc as much as possible, and the AI assist on internet searches with has been really helpful. At MOZILLA's suggestion, I am using Privacy Badger and Ad Nauseum, but don't really understand what they do. Thank you, Alan Upritchard. alan.upritchard@xtra.co.nz, an email address I have had for something like 40 years.