Example step by step:
1. Monday: I buy a Course with 1 day Access, but pay later with Offline Payment.
2. Friday: I pay my Course, and approved on Friday, and go to my payed Course. Course status: expired
I think my solve Step by step:
After pay: start counter when I first time go to my Course and start watching.
2. Friday only pay my course, and approved on Friday.
3. Sunday go to my Course and start watching the - Start the 1 day Acces counter