Welcome from Ontario, Canada. If the thread is breaking during FMQ and not regular sewing, it is probably a stitching and hand speed thing and you will need to slow down. You might be pulling the sandwich enough for the needle to get close enough to the plate to cut the thread. Check to see if the thread path is Clear and not catching on anything. Some threads feed upright while other need to be horizontal depending on how the thread is on the spool (stacked or cross wound)