Hey, so I sorta found a solution to this.. This is what I did, but you might want to back up your plugin folder or everything else just to be safe:
1. Go to Plugins>Deactivate and delete supercharts.
2. Go to https://www.wpcomparisoncharts.com/downloads/ and login.
3. Download the file.
4. Go to Plugins>Add new>Upload plugin>Select the ZIP file you just downloaded>Activate Plugin.
Tada! This did the trick for me. I was worried I was going to have to create my charts from scratch again but everything was still there when I refreshed my webpage.
Good luck!
