Please watch this video for reinstalling or updating your iLok License Manager:
Here are the steps laid out as in the above video:
1) Download the iLok License Manager here: https://www.ilok.com/#!home
2) Open the License Support Installer DMG file.
3) Remove any previous ILM versions by running the "Uninstall License Support"
4) Now open the License Support.pkg file to install the latest update of ILM
5) Now right click on your iLok in the ILM and select Synchronize
If you still have issues then please click here to create a support ticket.