need help with adding own bases as POIs

i have made five variations of a base and put them in a group, then told the game to add that group to a world, i have tried several times to get it to work, no luck.

the bases have alien cores, so it shouldn't be about that, could it be that i haven't added a spawner to them?

if anyone would like to see what the bases are like, i can put them up somewhere.

the world works fine other than that.

Edit
i tried adding spawners, fixing the name, i haven't figured it out yet.
adding the...

need help with adding own bases as POIs