Fyr'alath/Nasz'uro cannot be upgraded at the upgrade NPC after using Scale

We’re working on this as a priority issue. The fix is going to take some time to implement, however.

Thank you for your patience.

The first of two hotfixes went live about 30 minutes ago. The items can now be upgraded.

We have a second hotfix in the works that will apply the stone/crest discounts as expected.

This is now fixed on all realms.