Level has no collision when loaded through level streaming

I am making a PS1 style game and would like to split my levels into small rooms that can be accessed from doors. When a door is entered a trigger behind it loads and open the next room.

But Ive had struggles from the start with level streaming, at first my character was controllable but unable to move even when placed above ground (which I fixed)

And now, when I load a level I can move but I pass through it even when I spawn in the sky, All my levels have collisions, what am I doing wrong ?

Here is a screenshot of my Trigger Blueprint :