My problem is I tried to share my notebook & my friend received & accepted the invitation but he still doesn't see what I'm sharing. He even checked in his "Shared with Me" section and nothing listed in there. So I tried to cancel all the shares and tried it again and that's when I got You cannot invite any more members at this time. Please try again in a few days.
** Someone I knew has used evernote before so I decided to give it a try but there are so many bugs with evernote. I think I'm going to delete it.