I would like to propose a fix when processing payments when there are multiple invoices open for a customer.

In RepairShopr when there are multiple invoices open the payment automatically applies to the most recent invoice. However, It should apply it to the oldest so that late fees aren't generated through the older invoices. This would ensure that whenever a customer makes a payment the invoice with the closest upcoming payment deadline is taken care of first, rather than defaulting to the most recent invoice. This way customers aren't accidentally charged late fees when they have in fact made a necessary payment.

Is it possible that we could have a setting or something changed so that we could have the payments always point to the oldest open invoice rather than the most recently opened one?
Thank you in advance for looking into this for me.