Arks League - Broken Link / Missing information

Hi. To be brief, this link is broken:

https://dev-cms.pso2.com/manual/fundamentals/info/arksleague/

Which can be found on this page:

https://pso2.com/manual/fundamentals/sg

To elaborate.. anyone i've asked ingame about "ArksLeague", has assumed the information is readily available & that i somehow should already know/understand exactly how it works etc.

I cannot find a single shred of info about it trying to do a google search. & the official source link I have actually found, never loads.

Have tried to load this page several times, on different days. Please fix, thank you!

I am not even sure if Arks League is even active even though we have the NPC for it and everything.