can't build a large platform A, B

[Kienai]

why can't I build a large platform A, B. I've research both of them and have much enough resins. or what have I miss?

[Blurplegirl]

check placement; something might be blocking it, check power supply?

[Kienai]

Medium fabricator shows a pinky print in only large platform but I can still build other things

[Kienai]

It's a blueprint now I can build it. No idea why is that happened

[Blurplegirl]

if its pink something is blocking it