You can download the streaming installer for AOL Desktop using the download page for this application on Software Informer. Access the link below and then download version 9.7. I recommend making some kind of backup in the current version of AOL for your emails, but as long as they're on the servers, then you can simply uninstall the version on your computer and then reinstall the previous one. Add your account, and the emails will be shown again from the cloud. After installation, put in your older email, don't create a new one.
Download page: http://aol1.software.informer.com/download/