If you still have problem Adobe Creative Cloud with a trial (after when you bought membership, you apps working in trail version).
1. Go to www.adobe.com and login to your account
2. Go to "Manage Your Team"
3. Make sure that you activate your license and give rights to e-mail address (that you are going to use for Creative Cloud "Sign IN")
4. Login to your e-mail account, find letter from Adobe and "Accept Invitation"
5. Sign Out and Sing In again in Creative Cloud APP !
Thanks for sharing the Information!
Moving this discussion to the Deployment for Creative Cloud Team, Enterprise, & CS forum.