The thread keeps jamming under the feed dogs. The machine takes about 2 stiches and then it won't move any more, but it keeps sewing making a terrible mess under plate. What can I do to fix this problem? I have re-threaded the machine and checked the bobbin many times. I am using the correct Brother bobbin.

Fabric jamming in your machine may be caused by the feed dogs. The feed dogs are those tiny teeth along the sewing machine underneath the presser foot as those teeth pull the fabric through when the needle is making stitches. Lint or debris in the feed dog area can jam the mechanisms preventing them to move.

https://sewingmadesimple.net/why-does-my-sewing-machine-keep-jamming/

Slow down the movement of the needle. Make movement of the fabric a little faster. If this happens when you are sewing fabric with the feed dog operating then the bobbin tension is too tight (top set at four). Also, make sure the pressure foot isn't set too tight. If the material is thin you will probably need to use stabilizer.

just found this on the internet...
Fabric jamming in your machine may be caused by the feed dogs. The feed dogs are those tiny teeth along the sewing machineunderneath the presser foot as those teeth pull the fabric through when the needle is making stitches.24 Feb 2016

Why Does My Sewing Machine Keep Jamming?•Sewing Made Simple

sewingmadesimple.net/why-does-my-sewing-machine-keep-jamming/..
or go to this link..
sewing machine is jamming Google Search

it is possible that you have the feed in the neutral position ( halfway between forward and reverse ) from your problem discriotion

What make and model sewing machine?

Have you removed the bobbin case to clean it? If so, it probably needs to be reseated. Remove the bobbin. Take out the case and reinsert it. If you can't get the bobbin out easily, there is probably thread clotted up somewhere under the feed dogs. I usually gently rock the handwheel back and forth as I brush the bobbin case area to begin dislodging the "clot." It also helps to remove the throat plate so you have a better view of the mechanics under the feed dogs. You'd be surprised at all the goop that can be caught but you can't see. If you do find a thread clot, use a machine brush and tweezer to gently remove each thread bit. I really hope this helps you. If it does, please come back to Fixya and rate my advice. Thanks!

Hi, make sure there are no needle parts stuck in the bobbin/feed dog area. Also,make sure there is no lint in the same area. In my sewing experience, lint jams up smooth operation of all sewing machines.I would take apart the bobbin case, clean it and reinsert. Also, make sure that it has been oiled according to the instructions in your manual. Another issue which sewers forget about is changing needles....if there is a burr on a needle, threads break, don't feed properly, create more fuzz and eventually break. I hope this help you.
Happy Sewing.

Change needle
Clean under needle plate where feed dogs are for lint
Clean bobbin area for lint or loose threads
Rethread machine top thread make sure to get every thread guide
keep a check on the thread take up lever to make sure the thread doesn't come off of it
& bobbin
Check tension 3 or 4 is usually good

put a new needle in the machine
clean under the needle plate where the feed dogs are for lint
clean in the bobbin area for lint & loose threads
also rethread the machine, make sure you get every thread guide

When this happens it is because the thread tension was not right so it gets stuck under the bobbin case and the feed dogs. Use a bigger lint brush and take out the bobbin casing and clean out the shuttle. When you rethread pull slightly on the thread before you feed it through the needle. This will make sure the thread is properly in the tension discs.