Force expiration of single page link

[electricpineapple]

Is there a way to force a single page/post protected link to expire before the time frame specified in the paypal button creation. Is this value stored in the database that it could be manually manipulated at the correct place?

Here is the scenario:
Gift certificate for another use to register for membership.
1. The Gifter buys a single page access that has a registration for for a certain free trial period.
2. The Gifter sends the link to the Giftee who then can register for the free trial.
3. After the Giftee registers the link is forced to expire retracting the free trial registration form.

I am capable of manipulating this data on a registration hook if I knew where this is being stored. I am open to other ideas for this process. Thanks.

[Cristián Lávaque]

Maybe the video in this other thread will help you achieve what you want viewtopic.php?f=36&t=2842

The example he's explaining there talks about Free registration forms in the protected page, but you can use other registration forms with the same approach.

Let me know if that gets you closer to what you want.