Q: how can you now share sites via email? That option is no longer under "Share"!?!?

eMail the URL.

Please follow the instructions in this support article. Instead of typing the shell command directed in the article, I suggest that you copy and paste it from the web page into the Terminal window. Make sure you select the whole line. One way to do that is by triple-clicking anywhere in the line.

If you don't already have a current backup, back up all data before proceeding. You may have to log out or restart to see a change.