Since the clock change on the 29th the RD iOS app is not redirecting the correct time on the server. I can see this was fixed over summer in the macOS RD app, but it’s still in an issue on iOS.
So, I decided to called Microsoft (US 800-642-7676) to open a ticket.
Used the following page to find: Global Customer Service phone numbers - Microsoft Support
MS reports there is a known bug with the TZ redirect with the latest app. They are 'working on it' and all we can do is wait for the software engineers to fix this.
They offered to send me links on how to change the time but will revert each time you log on.
Guy on phone was very pleasant.
I got my own ticket for my call in.