Reinstate my access

regarding your cc files after cancellation:

You can continue to access your Creative Cloud files on your computer and the Creative Cloud website, subject to a 2-GB cloud storage limit. If you’re over the 2-GB cloud storage limit when you cancel, you have 30 days to move files out of cloud storage.

Contact Adobe customer support for this. If you have an annual prepaid account, access is granted until the last day of your prepaid account when you cancel.

Adobe customer care can be contacted by beginning a secure chat session at https://helpx.adobe.com/contact.html?rghtup=autoOpen. Pop-up blockers need to be disabled, you need to accept cookies! If the chat window fails to open, or is non-responsive, use a different device and/or browser to start the interaction.

For support via Twitter:
https://twitter.com/AdobeCare

(see also here: https://community.adobe.com/t5/creative-cloud-services/how-to-contact-adobe-support/td-p/11875703 or here
https://community.adobe.com/t5/account-payment-plan/how-to-contact-adobe-support/td-p/11843852)

Important: Adobe does NOT contact you unsolicited by e-mail or direct message. If you get contacted by direct message from a person, claiming to be an Adobe employee, look at that profile and look, if they bear the “Adobe Employee” marking under their name. Adobe support does not use Skype to give you support.
If in doubt, ask the forum.