How to sync folder in EX4100

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX Series
1

How to sync folder in EX4100. Goodsync works only for a month. After that it asks for subscription. Why WD doesn’t have a sync tool of its own.

2

I’ve used Microsoft Synctoy for years, doe a pretty good job of keeping my double back-ups in order and it’s free

3

hi, have downloaded Microsoft Synctoy at my office in windows 10. How do i link it to my WDEx4100 at home on iMac