Firstl, you can use an annual Creative Cloud Individual membership for up to 99 days. I did review the activation history for your account, and I see that on most days, the computer was checking on the status of the license twice a day. This is not the expected behavior and occurs when the stored digital certificates have been removed or invalidated.
The normal behavior is for one license check to be performed, and if the computer is unable to reach the server, then you have up to 99 days from the last successful license check.
Complete information about the expected behavior when you are offline with an individual membership can be found https://helpx.adobe.com/creative-cloud/kb/internet-connection-creative-cloud-apps.html.
To correct the current error, I would recommend following the instructions https://helpx.adobe.com/download-install/kb/adobe-license-issues-keychain-credential-mgr.html to remove the existing certificates. If the behavior continues, then please review the settings for any installed security or utility software, anything which has an ability to modify files is a suspect for causing the certificates to become invalidated.
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