Hey! Glad you're enjoying the game. Best way to get tips, guidance, submit bugs, etc. is to join our discord server.
https://discord.com/invite/QbdtSZM
That being said, I do recall someone hopping into the server with the same issue though I don't remember if it was bugged or just them missing an object that needed to be pushed. Make sure you're using Z to push objects as the mouse click won't register the action.
If that doesn't work post your save file in the #project_skyward channel so we can play test it.
Thanks!
-Eraa