I hope you are doing well. As described, you want to access the scans done in 2021.
We need to confirm a few details to help you better,
1- If you were logged in to your Adobe Scan using the Adobe ID/e-mail ID, which has the subscription, all the scans are automatically uploaded to the Document Cloud. You can visit the following link, Document Cloud. Sign in with your Adobe ID/e-mail ID; you will be able to access the Adobe Scan folder containing all the scanned files.
2- If you are currently using the same account, then try using the following links to view scans,