Thank you for the reply. The option you show was not available to me
yesterday. Only Item Title and Subtitle were available from that screen.
As of this morning, the Custom label (SKU) field is available for me to
use again.
I chatted with customer support and they were able to confirm this is a
known bug and they are working on a resolution. They said it could take
24-48 hours.
Similar problem. From the drafts page, when I work on a new draft the
Custom Label (SKU) field is just missing. I assume this was caused by
the last update and they will fix soon?