sharing below in case anyone else experiencing same:
when first upgrading to new beta app, zero devices appeared in my account (see my post above). anyway that got resolved by itself.
after that, everytime i open the app, i can see all my devices but they are all "offline". in fact they are actually online. i tested using alexa and works fine.
I would wait for some minutes before they appear online. sometimes it's many minutes and still remained offline.
When they become "online" in the app, tapping on the light will get the message "please confirm your device is connected to internet" (tested with alexa, bulbs are actually online). i can tap on the on/off switch, but once turn On, cannot turn Off (tested with alexa, can turn on/off).
if i tried like.. 1 hour later.. tapping on the light does NOT get the message "please confirm your device is connected to internet" anymore.
naturally i also checked my network.. everything seems to be running normal.