I remember getting a message or notification about this but can’t find it or for the life of me remember where I saw it. I thought “I’ll do that later” but never did.
I’ve spent ages searching the web but all I can find is how to add Facebook event manually to the iOS calendar rather than subscribing and it then adding automatically.
Does anyone know how to update the subscribed calendar to get it syncing again?
You’ve probably been signed out of Facebook in the iOS settings. Go to your Settings app and search for Facebook. There should be an option to sign in.
You need to get the .ics feed via the Facebook desktop site. Go into the events tab, and at the bottom on the right side you’ll find the ‘Upcoming events’ feed link.
I just tried copying that link on my desktop and pasting it into my calendar app on my phone (I use Fantastical) and it added all my events. The FB page says it’ll stay updated but probably best you check by joining a new event and checking your calendar after a while to see if it’s synced.