Can't Sign-in with Google Account on Ipad

I recently purchased an iPad and have been unable to sign in to any of the CC apps that I downloaded.

I get my subscription from my job, which uses a Google account to log on. After selecting "Continue with Google", I choose my account, the screen says "Signing In"... then plops me back on the Sign-in page.

The Google credentials are correct, since my profile now shows in the "Choose an Account" dialog (and I got a "new sign-in" email).

Anyone have an idea of what the issue is?