Hi @Umadhar,
The session ID needs to be unique – removing the constraint won’t resolve the problem.
If possible, I would suggest trying to access OJS without the reverse proxy being in the way. Unfortunately I can’t give you specifics on how to do this because there are many possible proxy configurations, but within our hosting environment here at SFU, it would normally mean accessing the hosting server directly (possibly at a different IP address and port than your front-facing proxy uses).
Regards,
Alec Smecher
Public Knowledge Project Team