Can someone please explain how subscriptions and webhooks work together?

[possibility]

Hi,

I'm trying the subscription button. First, how do you link it to a sandbox account? That's not clear. So I tested it with a low price and real user.

I didn't get any webhook events. Then I realized when I created the button it was not linked to any of apps, so of course a web hook would not be called. 

So I'm really confused now. How programmatically do I know a customer signed up for my service? I have to turn the service on so I need notification somehow. And unlike the Buy Now buttons there's no callback either. How is this supposed to work?

Thanks for any insights. 

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="YAQMDE7BZ5DFY">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_subscribeCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>

[theartillerysho]

I was told that if you use the buttons you will not be able to get the webhooks. If you want to use webhooks you have to use REST. I am too far into my implementation when I found this out, so I am going to use cron jobs to find out when subscriptions will expire. 

[possibility · Accepted solution]

Thanks. That explains why it didn't work at least. Does it even say that anywhere? I'm beyond confused as to why it just doesn't work like everything else. The documentation is so bewildering it's hard to understand what's happening at all.

[theartillerysho]

Not that I am aware of. I have almost given up because their documentation is all over the place.