Has anyone been able to use the EX2 Nas as a Calendar server?

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX2
#1

I like the idea of having my calendar and contacts on my server instead of Google’s.
Has anyone been able to install and use a private system that can also sync with an android phone on an Ex2 Ultra?

#2

Hello. Did you ever have any luck with this?