Only getting 1 reward option from astrolobe vaults?

I keep getting only 1 option from astrolobe vaults? are there any requirements to get 3 reward options to show up or is it bugged?

Every astrolabe gives you a task. Breach requires you to complete all the breaches or delirium requires you to reach 5 reward. The game will tell you what you need on the shaped area.

If you fail these tasks you get less curios in your vault.

With the synthesized stability node on atlas tree , can i just do the same map over and over again or do I need to do other maps too for more rewards?, because once i did all the quests for abyss on the same map and only 2 rewards showed up in the vault?

Yes, Synthesized Stability works fine for reaching 3 curios.

So it's a chance between 1-3 rewards to show up? if u do the quests at least 2 will show up at minimum?

Thanks for answering my questions :)

If you do all then you will get 3 always.