Currently it's not possible to turn off the setting that causes an invoice link to expire automatically after 90 days. It would be great if this could be a customisable length of time, with the option for the link to never expire.

From our company's perspective, most of our invoices are sent out more than 90 days in advance which means we have to constantly resend the expired links to our customers, which is not time efficient for our business and also negatively impacts the customer's impression of our service when they are unable to make a payment with their original invoice link.