Sometimes options in share panel of Organizer starts behaving weirdly or become invisible completely. OR email workflows becomes more problematic.. The very first thing which one should try is -
1. Launch Organizer
2. Launch Preferences dialog from Edit Menu or press CTRL+K
3. Go to "Adobe Partner Services"
4. Click on "Clear Online Services data" and "Reset Accounts"
5. Relaunch Organizer and wait for few seconds
6. Now check if you see any change or not ?
In case, it didn't work for you - leave a comment and we should try to resolve the the problem ! This is one of the generic method which can be tried while seeing some problem with any of the sharing problem.