I can no longer sort emails by date. I did find “Sort by – date” in the right hand menu but it’s greyed out. Since I’ve noticed tags are underlined when a new email has come from the same source, but the option to view only tags are greyed out too. So I have an impossible jumble of emails “sorted” by sender and without taking all morning, I’m left with no idea what new emails I’ve received! I’ve only one sensible option left. I still have my old computer that runs on “outdated” software. I can consult Old Thunderbird, installed about eight years ago! That version works just fine! Thanks!