Understand that F4 preference is the LOWEST priority that there is. You can wait a long time. F4 for Vietnam is currently taking close to THREE YEARS to process.

Note that you probably know this but F-1 is your VISA type. F4 is the family sponsored preference class. It's confusing to some that they use the same letters for both designations.

You're out of status NOW. Unless the school reinstates you (or you find another) and get a new F-1 status, you are in trouble. I'm not sure what a "language school" is but five years is a long time for any program. You should get yourself