For each product, you can set up individual Access dates:
«Access start date» — from this point on, users who have purchased the content will be able to watch it.
«Access finish date» is the date, when the content becomes unavailable for users (If you plan to sell the product for a long time, it makes sense to put a date in a distant future).
«Finish sales date» Users will no longer be able to buy the product after this date.
🔥 The important thing is that the Access finish date cannot be less than the Access start date + full time of access period from Price section. (in this example it's 30 days)
If you want to limit sales by time but keep access to the content for users who have already purchased, you can specify the Finish sales date. After this date, the product becomes unavailable for purchase but a buyer can still use it.