For instance, in Stripe, customers have a "delinquent" attribute that shows if they have any invoices whose payments have failed that have not been manually marked as closed or forgiven or whatever.
Currently, I don't want to end a customer's subscription, but I'd like to know if they're not up-to-date with payments, and if so, put up a "fix your billing" wall on the site.
Thanks for reaching out to us.
You can obtain all the customers who have unpaid invoices by navigating to the Customers tab. Here, click the "Apply Filter" option (top-left), and filter with the condition:
Invoice: Status >> includes >> Not Paid, Payment Due.
You even have the option to export these invoices as a PDF or CSV file.
Hope this helps. Let me know if you have any questions.