upgrade and drip content code

This is a quick 2 part question.

1. I did a test purchase with a seperate email account to upgrade from a level #3(one time fee) to a #4 (re-occurring payment billing).

I recieved notification that the payment was made but the account stayed at a level #3

I made sure to create a “paypal subscription modification” to upgrade from 3 to a 4 but nothing changed. Any advice?

# 2. When I use the content drip shortcodes made available in the API scripting

How can I make the content drip from time of upgrade instead of time of purchasing level #4?

Thanks Guys!