The following resource for JSTOR is provided by the Library of Seminole State College.
Your JSTOR username is the same as your MySSC/Canvas username, followed by @seminolestate.edu (ex: student@seminolestate.edu). While it is similar to your SSC email, you will need to omit the 'live' part of that address. The most common error is using the full student email format instead of dropping the 'live' portion.
The JSTOR password should be identical to your current Canvas password.
Here are a short video and handout that detail the login process:
If that information is still not working, please contact the Help Desk.