Hi. Have you upgraded to v10 already? As already noted, Local Notebooks are not supported in the new app so there's an option to convert them to normal synced notes. If you took that option, your notes will remain available to you in the Free version - subject to the limitations of that version.
If you elected not to convert these notes, then they will have been 'orphaned' in the old database on your device, and you will need to keep, or reinstall, the Legacy app to manage them. You would be able to export your notes to HTML format to create a kind of local website from them.
Beware that pre-v10 apps are no longer supported and may be affected by future OS and browser changes on the host device. They are also a security risk as there will be no further updates or added protections if any vulnerabilities are found.
If you search your hard drive you may have an old installer left from your 7.14 version - hang on to that, because it's getting much harder to find official downloads of that version!