Hi Manisha, the security problem from this task is kind of back:
https://stackideas.com/forums/security-problem-1
When using a discount code as a URL parameter, I can see some billing details of the last buyer.
Coupon code:
https://www.redmine-x.com/index.php?option=com_payplans&task=plan.subscribe&plan_id=1&coupon_code=redminex67offdjdzwq56
Can you please get rid of them as you did before? Thanks a lot. Michael