Notification Flow - User input not sticking to the journey

I have flow which is triggered upon a response selected by user when notification is sent. So, in the flow need to take few inputs from users, like pincode, etc. But question node when user inputs it changes the flow to home flow. I tried using store comment, but that doesnt work as expected only the first time it shows, the second time it is skipping the store comment and proceeding without input and failing. How can this be addressed?