All of the tasks in Reminders app are gone.
To be exact; I was using Fantastical app on my iPhone to create tasks, and Fantastical is (probably, because I never bothered to check it out before this issue happened) using the Reminders account to store those tasks.
One day all of the tasks I've created are gone, there are only three lists in the Reminders app: Family, Family & Reminders. Yes, there are two Family lists, I don't know why.
Inside the recently deleted list, there is nothing in there.
Inside one of the Family lists, there are only two tasks: an old wedding reminder of my cousin (due on last February 2026) & my sister birthday (due on April 2027) left in there.
But the other tasks have gone missing!
I checked the Reminders app on my MacBook & iPad, they also show the same: that all of the task are gone.
I use the same iCloud account on all of iDevices, so they all are automatically synced.
In the iPhone's settings, in the Reminders app settings, there is only one Reminders account: the iCloud account I'm using on the iPhone.
I have never add another calendar or reminder accounts.
And the iCloud sync for the Reminders and Calendar apps are always turned on and active, I have never dabble with the original settings, I always leave them as they were from the start.
I tried to restore the Calendar archive from iCloud's website recovery database feature, but it says there's no archive to restore at all, below is the screenshot I took from the website. 👇🏻
I asked the Fantastical support first before posting the issue here, and they said there's nothing wrong with the Fantastical app based on the log and error report, they told me to ask to Apple instead.
I have the latest Fantastical app version on my iPhone.
I only installed the Fantastical app on my iPhone, I don't installed it on my MacBook nor in my iPad.
I've just upgraded my iPhone into iOS 27, previously when the issue happened it was on the latest iOS 26 version (I forgot which version it was, but I always updated it into the latest version available).
Can someone please help, anyone know what happened?
And how do I restore all of those missing tasks back to the Reminders app?
I really need those tasks back, I'm a very forgetful person, I've been relying heavily on those tasks to get my job done...