Question o.owhat happen to the link to buy devil's wings power user andEVENT CORE?~

[DuMyBaKax3]

Just yesterday,at [Only registered and activated users can see links. ] when i log in at rakion shop there is an option to use epoints to buy
-cash
-devils wings
-event core
-power user

But today, just one day of difference the

-devils wings
-event core
-power user
has seemed to have disappeared without a trace, i wanted to buy some event cores and im wondering what happen to it

has it something to do with the world merge?

and the part about the rakion rss denominations being erased can someone please elaborate further for me?
what is the difference bwtween ris denominations and rss denominations?

tyvm