[ASUS ZENFONE 2 (rooted)] All Calendar apps do not work [5.0 Lollipop]

So I was uninstalling the massive amount f bloatware on my Zenfone including the Calendar app made by ASUS.
I figured I would just be able to install the Google Calendar app.

But now all calendar-related apps i try do not function. They either close or do not let me input reminders. I've tried aCalendar, Google Calendar, and even tried to re-install the ASUS one. All to no avail.

I believe I have deleted my Calendar Provider. To fix this, will I have to reset my phone?

I use my calendar every day for school so any response would be greatly appreciated!!!

Thank you,

-Chris