I contacted Evernote through their support link and received great help and it is now working.
I have also tried the suggested ideas within this forum. I uninstalled evernote, deleted the file, rebooted and then reinstalled. All of my shared notebooks are ones that I have shared with others so I can't delete. HELP!! This is my lifeline. I don't want to rely on the web version only. I miss my windows version on my laptop.