How to backup & access to "My Cloud EX2 Ultra" from the internet

Hi,
I want to access to the My cloud drive (My Cloud EX2 Ultra) via the internet for backing up computers or for accessing data stored on the drive but not through the browser (I prefer to map a shared drive). I have not found any solution or a software to do so, I would be more then happy if anyone has step by step tutorial.
B.t.w - Does my drive come in OS 5?
Should I need to upgrade?

Thanks in advanced

@aarrek, have you tried GoodSync for WD?

@aarrek You placed your topic in the My Cloud Home sub-forum. For help with the My Cloud EX2 Ultra placing your topic in that sub-forum may give more results when you need help again. You can always check the Knowledge Base too.

Click on, tap or activate image to enlarge it.

If you have OS5!

No, Will it help with what I want ?
Thanks -
I understand that I post it in the wrong sub-forum - so I’ll copy this to the right one as well,
Sorry

@aarrek Here is what a search of the Knowledge Base brought up.

Find Answers and Discussions (wd.com)

Here’s more information about your device.
My Cloud EX2 Ultra (wd.com)

Thank you very much “cat0w”,
I have seen these articles, but I am looking to connect to the drive via the internet and then I can do mapping (I know how to find the Device IP and how to map it on a local network).
Regarding the backup - the intention is to back up to the drive from different computers through the Internet and not the other way around, in the link you referred to from at least what I understood it is a guide on how to back up the cloud drive to another location.
Thanks for your patience