When I was managing my subscription plan, I got very confused as by when my subscription plan ends. Even tho my phone is set to display the dates in my country format, it does not within this app, it stubbornly uses the USA-format.
Since your app is geared towards a global audience, I would suggest to adopt the ISO-8601 format. 🙂
It's 2026 already contrary to what politicians and military would like us to think, we really should think more like we are unified.