It says the mod is compatible with Space Age, but I cannot for the life of me figure out how to build my cargo landing pad. I've tried deconstructing the pod with the pad in it, but it doesn't do anything except mark it for deconstruction

I just checked – the marking cargo pod is working correctly. What planet are you landing on? What mods are you using? Can you share a save file so I can check?

Is marking cargo pod a different entity? Or a special deconstruction filter?

i cant figure out how to start deconstructing my cargo pod once I put it on planet.

can you share a video on how to?

I was able to reproduce the bug, I will fix it soon.

This was the intended method for placing cargo landing pads on planets. In version 1.2.3, I'll allow simply dropping cargo pods onto a planet to place the pads.
https://go.screenpal.com/watch/cTXXjrnFGEa