cant attach the greenhouse door

[Blitz Angel]

I am having an issue with trying to attach the greenhouse door, it wont allow me to, i have tried every way possible but still wont let me, can someone please explain how to do it properly, this is my own greenhouse, i done the mission and found it hard also but managed with that one but its not letting me now on my own

[BETTYGILL]

I can't log all the way in. Gives me some kinda unity error.