Security certificate expired
Since the security certificate is expired, nothing can be read on the website. Even the mobile app comes up blank.
@nutaris ... I can confirm absolutely nothing can be read online or in the app.
Sorry about that, it was my first time renewing the cert and I forgot an important final step it seems: restarting nginx (well reloading the config anyway). It seems it doesn't re-read the .crt file until I do that.
All fixed now!