There are only 4 rooms in the actual experience, not counting the title. After room 3, you're in the final room with the revolving sphere. Once you attach yourself, the game should quit. Based on your description, it sounds like you're reaching the end.
If I go to room 3 and connect and unconnect a bunch of items, also select and deselect by selecting the object again. Eventually 15-20 seconds the connector stops working. I recorded a video after it broke. https://we.tl/t-OyHynikLwt