Could Not Verify Code issue with Multi-device subscription to consolidate old separate subscriptions

VK-73

I have just bought a 7 device subscription to replace and consolidate a bunch of separate subscriptions I held.

 

The issue I am having is I have been able to update an Android Tablet and a Win 10 PC ok, but now I am finding the code is not accepted on my 2 iphones and 2 Macs.

 

Admittedly the Macs still have about 40 days to run on the old subscription. But I wanted to try and cut over so it was all mananaged as one subscription.

 

How do I proceed?  It sems even if I uninstall on the Apple device, a reinstall bring back the old subcription which probably came from the Apple Store App.