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PART I: Please ensure your computer meets or exceeds the minimum system requirements to run Creative Cloud + all other apps you intend to use. Check each one.
https://helpx.adobe.com/creative-cloud/system-requirements.html

PART II: Confirm your account is active and payment details are current.

https://account.adobe.com/plans

PART III:  Ensure you are logged-in to a PAID plan and not a FREE plan.

1. Open CC Desktop App.
2. Click the gear icon > General tab > Settings. Select "Always keep Creative Cloud up to date."
3. Click on your Avatar (top right image).
4. Sign-out of Creative Cloud.
5. Close all apps.
6. Restart your computer.
7. Open CC Desktop app.
8. Click your Avatar.
9. Sign-in with your paid ID and password.

Post back if you still need help.