Tanzu Hub Home page says Foundation attach is in progress, but i can't view foundation in the Platform->Regions & Foundations page. Below are sample screenshots:
Home Page
Platform-> Regions & Foundation Page
Tanzu Hub version 10.4
This is an expected behaviour, Platform 'Regions & Foundations' tab page will show data only when Required Region/s are available.
In the attachment workflow, the default region is created at towards the end of the attachment process which is after a connector becomes available in Tanzu Hub's Entity Data Service (EDS).
You should be able to see entries under 'Regions & Foundations' once the attachment process is complete.