I live in a zone that has chosen to stay on mountain daylight time but my hub has switched to mountain standard time this morning. This upset many of my automated events. I have set my time zone to central standard time but it does not seem to want to stay, it switches back to my geographic time zone (mountain standard).
Can it do that? I have never seen or heard of auto time zone selection. You are hitting the green "Save" button at the bottom after changing things, correct?
There should be some time zone that works, there are close to 25 choices, so I hesitate to suggest one. I just typed "mount" into the search box to see all that have this option.