Hi. Please don't post the same query twice. I zapped your other post on this subject.
Evernote on the web automatically saves changes as they're being made, so there are no specific controls for that - watch the note as you type and you should see a 'swirling check' which shows the save is in progress / complete. If you have lost content in an existing note it should be possible to recover it through Note History - a paid feature, but worth considering (even if only for a month) if th