Hi Sudip - I just started up your Hackathon instance. I noted that you have changed the login screen. Which is completely fine, but be careful - it can be easy to accidentally lock you and everyone out of your system. I definitely recommend taking an export of your work frequently just in case you need to restore it.
Hi Sudip - I just started up your system again. You can access it directly at https://lksi6dzt.pegace.net/prweb. I think I understand what is going on now - as part of your work to change the login screen you made it impossible to log in via sso by changing the access group of the sso browser requestor. I just changed that back so you should be able to login again. Let me know if you continue to have issues.