Version 18.0.14 brings clearer birthday information and a fix for the Payment settings.

A dependent's age now appears next to their birthday in your customer's Dependents list, while you add or edit a dependent, and in the customer's own account, shown as years, months and days.
The age is worked out from real calendar months, so it stays correct around leap years and month ends, and it rolls over on its own at midnight if you leave the screen open.
Ages are shown in your language, and a missing, empty or invalid birthday now simply shows nothing instead of an odd figure.
The Payment settings tile and the Payment tab when editing a class no longer stay hidden when a page is opened from cold; they now appear as soon as your business details finish loading.