Does deleting an invoice remove access to purchased video?

I just came across your plugin, looks great! I was wondering how the plugin determines eligibility to view the purchased item. If an invoice is deleted from the Woocommerce backend, does it remove the ability to view the item they purchased? What about if you mark the invoice as pending?

This would be ideal as I want to sell access to items for 2-3 months so I can simply export and delete invoices from a specific month (or mark all those invoices as pending). For example, on April 1, 2018, I can delete all Jan 2018 invoices then those customers no longer have access to said item.

Thanks so much!