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Hi
Thank you for your question in this community, I am willing to help you solve your problem, according to your description of the problem:
I did a test on my computer. Same as you, I can only display the local time, not the time set in the regional settings.
I suggest you contact the administrator in your organization and let him open a support ticket to our related team as soon as possible so that they can be aware of the issue for further investigation.
Your patience and understanding are greatly appreciated,
Best Regards
Ethan