[Paid Listings] Expiry of purchased Ads

I have purchased the paid listings add-on and I need the purchased ads from a package to expire let’s say in 3 months.

So if a user buys a package of 10 ads but after 3 months has 7 remaining, they should automatically expire. Is that somehow possible?

Thanks.

https://www.ads-software.com/plugins/wp-job-manager/