A million thanks to those who told me how to go back to v. 6.25! I thought I was losing my mind! The crowning blow with v. 10 was when all my notes disappeared..........blank, zippo, gone, though the notebooks remained. Fortunately, I was able to confirm on the website and my phone that they truly still existed. That's when I went looking for others' comments on v. 10.
Big sigh of relief - I can get rid of dark mode in left panel. All the options are back - why would they remove all options??!! - so I can specify notes to work the way I want, and most important of all, I can put my shortcuts back on a toolbar across the top. And note titles are back where they belong, not as the first item in a note.
Hope you're listening Evernote. You're about to lose another customer of 10+ years who has been an evangelist for the program. Waiting to see what happens next...
Meanwhile, a million thanks to forum users!