Viela

Cooking can still be helpful because of the buffs

Are you stuck in pandaemonium?

You can still make some decent accessories, and potions and serums are always pretty useful.

Which instance is it, and did you try escape or scrolls

You probably ran out of your Siel's Aura, you only get 2 hours of trial Siel's Aura per day. Without Siel's, you can't really pick anything up except junk items.

I'm not sure if you ever got your answers but: 1. You need stigma shards to equip stigma stones, which will give you certain skills. Most likely they accumulated from a log-in event because you were logged in for a certain amount of time needed to get the login reward. 2. You can trade in crowns for abyss points in the Abyss (either in Primum for Asmos or Teminon for Elyos, just go to the artifact relic NPC and sell the crowns to them). You can use the Abyss Points you get to buy certain items from the NPCS there 3. Login events were there just to give you items you can use in-game for being online for a certain amount of time (For example, lockbox keys to open the lockboxes you get from mob drops) 4. I'm not sure what you mean by replace, Siel's Aura just lets you play the game fully beyond the trial 2 hours. It's basically a subscription because you can't really complete quests or gather or get Abyss Points without it.