The first one is just the foundation block
Ostinatto its what you place the frefab buildings on, you can't build refiners etc onto it. The second image is the roof of the prefab building, you need to build a door to enter it and build it inside.
If you research the other kinds of structures, cuboid rooms, walls, floors then you can place it on one of those floors "al fresco" if you'd rather it were outside.
So I currently have 2 quest as primary missions both involving the Mind Arc. One is called The Space Anomaly, which requires me to talk of Null to Nada, which I've done, and then says to construct a Mind Arc, which I've also done multiple times and it's unchecked. Then I have a primary mission named The First Traveler, which had the steps to building a Mind Arc, and the last step says to assemble a Mind Arc, but that's also unchecked. Looks like I'm not getting it to recognize I have made the Mind Arc.
And I'm not seeing any way to reset these primary missions on ps4. Any suggestions?
And you have the mind arc in your inventory? You say you did it multiple times, did you delete and remake the mind arc multiple times? That's the first thing I'd try, and when I rebuilt it I'd make sure that mission was selected. As I recall while I was at that step I could still see via the portal which system I had to talk to Artemis in, if you can too, try going there and talking to her and see "sees" the arc and skips the quest ahead.
So I located this giant portal and fed it all the mats I needed to "activate" all the symbols. Now it asked me to travel through the portal or request the planet's address. I tried to travel through, but it gave me a bunch of blank spaces with nothing filled in. Then I requested the address and a bunch of symbols appeared on screen (took a screenshot).
What am I looking at here and is there a way to remember where this is and how to come back?
Thats the portals you can use to go to and from undiscovered planets. Think a stargate. You need the symbols to connect to another planet, each portal on each planet has its own individual address. You won't be able to use it to travel out until you have unlocked enough glyphs from
gravesites or from travelling once you reach the point of the quest called "The purge". Easiest thing to do is plop down a base computer to remember, name it "The Portal" and not only will you remember where it is b ut you could warp there whenever you like (or a save beacon). If its a nice planet consider making a more permanent base there. You can find portals via the Alien monoliths, as you can pay some racial loot (like Vy'keen daggers) to be shown where one is.