I have a Sony Xperia Z with Android 5.1.1, and I'm trying to get events from calendars I subscribed to on Google Calendar's web interface to show up on my stock calendar app. Specifically, some of the calendars I subscribed to don't show up in the app. I tried checking if they were disabled but they aren't even in the calendar list on the sidebar.
Using this app I was able to find that the calendar subscriptions I wanted actually exist on my device but are listed with "0 events," even though their events show up on Google Calendar's web interface.
I have tried rebooting my device, checking that all calendars are enabled both in the stock calendar app and in settings, and manually syncing from settings.
How can I get the calendar events to sync and show up?