I'm using a Google form which on several Android devices and a Windows PC, is showing the time in 24 hour format, which is what we want, and on one single device - a Galaxy A9 5G tablet - insists on displaying it with AM/PM. I've gone through all of the Date/Time, Location settings I can think of and mirrored them against a device that works - but no joy.

This is now driving me crazy and I'm possibly overlooking something completely basic at this point. Any ideas?