jwt sso link not working for the second time on lambda aws function

We are facing some issues with jwt SSO :

 

1. While creating a user the default user timezone is Asia/Kolkata any reason why ?

2. JWT SSO link generated from local is working really fine, multiple links for the same user( email/external_id ), but when we put this on aws lambda server it is not working as it should be

   - First JWT SSO link generated for a user is working fine but for the 2nd link for same user trying to open on same browser facing these issues:

   - Error : "link is reused" ( we are changing jti everytime and its working on local )

   - Error : "supplied iat value is more than 3minutes off"