Custom GPT - getting users active session url

Is it possible to get a user’s active session url when building custom gpts?

I am trying to build a stripe payment integration for one of our custom gpts. Although everything worked smoothely i am having issue related to getting back to the user’s active session after the payment succeeded or failed.

The product i am building is a small shopping thing and so far i am letting the user choose a product to buy and let them initiate the payment which prompts them with a chekout url. Users can click and pay for the product but i will need to get them back to their active session url so they can continue in their chat context. Has anyone done this before? or is there a way i can get the active session url of the user?