I can't use the Illustrator app and am prompted to buy it, but it's included in my plan

Hi @Hugh31926603dyjd 

Did you follow the steps listed in the articles suggested by the experts above?

Also, could you confirm if this happens only with Adobe Illustrator or all other Adobe apps?

Looking forward to your response.

Regards,

Shivangi

try @John T Smith's first link. 

only if that fails to help proceed to - https://helpx.adobe.com/enterprise/kb/resolve-trial-and-license-expired-errors.html

if that fails, https://helpx.adobe.com/download-install/kb/adobe-license-issues-keychain-credential-mgr.html

below are solutions some users reported:

if those all fail, change your cc language. eg, try international english - https://helpx.adobe.com/creative-cloud/kb/creative-cloud-trial-mode.html

if that fails, change the install location

Revert to trial https://helpx.adobe.com/manage-account/kb/stop-creative-cloud-trial-mode-after-purchase.html may help
-and troubleshooting FAQ https://community.adobe.com/t5/Get-Started/Troubleshooting-FAQ-What-should-I-do-if-I-have-a-membership-but/td-p/7601068
-and https://helpx.adobe.com/creative-cloud/kb/cloud-website-shows-trial-purchase.html