Got the ZTNA free subscription to activate from the firewalls page, but nothing works from then?

I managed to find the ZTNA banner on the firewalls page which i activated and received the notification that the ZTNA subscription had activated, but then the ZTNA product page never loads via products, also initially when redirected to the ZTNA page after the activation nothing works.  I can't create gateways, policies anything???  I always see a notification:  Problem loading data. in red when trying to do anything on the ZTNA page???  I came back to Central just now and still no ZTNA product page plus the ZTNA banner reappeared on the firewalls page like earlier??

Any ideas??