We're having some issues with Softube Central log-in and iLok account linking right now. We are doing all we can to find a solution as soon as possible. As a workaround, please use the direct installers:
Note that you may also need the iLok License Manager to manage your license activations.
At the moment, it is not possible to activate licenses that have been purchased as upgrade paths. This is something that will be fixed in the near future. For now, iLok License Manager is required to activate upgrade licenses.