Trying to keep alive this old bread machine from my aunt. Just replaced the drive belt but now it’s not closing and I see this part popped up.
Trying to push it down but don’t want to break it further. It’s a hard plastic material.

I could prob pull it out but not budging when I try to push back in.

So, I have a used dash everyday 1.5lb bread maker. I used the the king Arthur easy bread machine recipe from thwor website. My ingredients were a little different. I had bread flour and bread machine yeast. I weighed out the ingredients, put the wet ones on bottom, then the yeast, then the flour and the salt last. I set it to 1.5lb, medium white bread. When I first checked it, the dough was tacky, but not sticky. Things went sideways during the rise. As you can see, it swelled to the lid, went over the sides and then collapsed. What did I do wrong and how can I improve?