P0729, P0721 and P0741 just appeared on a 2012 Kia Soul, 33,000 miles

Question

Had car inspected and oil changed. No problems. Then drove on a trip 4 days later and engine light came on and not shifting properly, automatic transmission, but high rpms at 55-60 mph, 4-5,000 and seems to be stuck in a lower gear. Had codes read at autoparts store and they were in order P0729, P0721 and P0741. Check engine light remains on. Unable to check transmission fluid in this model as manual says supposed to be maintainence free. Any ideas as to what may be wrong? Could something have been knocked loose during inspection/oil change?
Thank you,
Angela