How can we improve WHMCS?

I hope this message finds you well.

I am currently facing a situation and unable to find a solution in the documentation. Here’s the scenario:

When a client fails to pay an invoice, and the grace period has expired, the invoice is canceled. I would like to configure the system in such a way that after the cancellation of the invoice, the client is granted a specific period (e.g., five or seven days) to resolve the issue.

After this grace period, I would like the system to automatically disable the client's account without deleting their profile or data.

Best regards