I got the answer from @Holm Steinland Thanks again Holm !
Here's what he told me:
Start here: https://myibm.ibm.com/dashboard/
and select the tile for "Container Software & Entitlement Keys"

From there I was able to get my key

I was then able to connect webMethods Update Manager to the IBM PAO site to view/install fixes.
Note: if you don't see a key, then click Add new key button.
Wayne