Hi,
On the picture, your Stop/Start button is red. That button is for sewing without the foot pedal. Make sure that it is off. Also, I noticed that your speed indicator is all the way on turtle. Try moving it to rabbit. That is all I have.
I took one of my machines back to the store,because the feed dogs would not come up. You have to turn the wheel to lift them. DUHHHH. I was soooo embarrassed.
If you live near a quilting store, you may be able to get a new set of eyes on it, especially if they happen to sell Singers. Shop owners and quilting customers are very helpful at times.