I have just updated T-Racks CS Grand to version 4.1.
But I find that if I want to purchase the 3 upgrades that Custom Shop is needed not the authorization manager.
My music computer as it's not connected to the internet. For my previous IK Multimedia purchases I just used my internet computer and the IK authorization manager on my music computer.
Until IK Multimedia sort out Custom Shop to be used on non-internet music computers. I and others will not be able purchase upgrades to T-Racks CS Grand which we authorized throught authorization manager.