The issue is happening on PC. After starting photoshop, CC shows a dialog box saying :
WE ARE HAVING TROUBLE VERIFYING YOUR MEMBERSHIP. Either you are offline, or there's a billing issue with your team account.
Here I can Continue or Retry. I have Retried but nothing happens. So only thing I can do is continue.
But I am not offline as I am able to login into CREATIVE CLOUD application. And I am sure there is no billing issue either.
artvikas, If there is no billing issue then please refer to :
Hope this helps you.