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Today support app updated. After that there are two support icons shown in settings page. One is under device settings with color teal (it's the new) and another one already appear under system with question mark. Both icons opens the same page. Any error in update.
@Roadrunny76 Thank you! I'll forward this information internally. I'll let you know here as soon as I know anything new. I apologise for any inconvenience that this causes.
After a week any news from internally to solve this issue.
@SKXA I do unfortunately not have any new information at the moment. I will let you know as soon as I do! 
Uninstall the updates
Problem solved
No, after the new os update the problem solved.
I have received information that a new version of the Support app will be released which will correct this. Apologies for any inconvenience this causes until then and thanks to everyone who provided information.
Just got the update for Support App, and now there is only one in settings.
What's that System UI Tuner below the support? How did you get that?
You can play with status bar icons and quick settings. Pull down the status bar all the way. Keep pressed (for about 10 seconds) on the settings wheel on top right, and then release. You should get a notification asking if you want to activate UI tuner.
Found it. Thank you.