To access JSTOR you must have a Dunelm account - you can sign up for one here.Once you have received your registration confirmation email please log in and follow the instructions available here.Please note your alumni password and your JSTOR password are not linked so resetting one will not have affected the other.
If you have followed the instructions and are still unable to access JSTOR please email main.library@durham.ac.uk including screenshots of the issue you are experiencing.