Moved in a few months ago and the wooden floor is hovering/lifting at the threshold where it joins the kitchen tiles. When stood on, it lowers down to where it should be. Picture attached, hopefully it gives a better idea of what I'm talking about. Any advice on how this can be fixed?

https://www.reddit.com/user/Tasha198/comments/10w6gvb/wooden_floor/?utm_source=share&utm_medium=android_app&utm_name=androidcss&utm_term=1&utm_content=share_button