I have both Facebook/Messenger updated on my iPhone. But, I still have the old UI from months ago. How do I get the new UI to show up?

I have both Facebook/Messenger updated on my iPhone. But, I still have the old UI from months ago. How do I get the new UI to show up? - 1

Did you try reinstalling it?

Try uninstalling it and Reinstall it should that not fix the problem it may be a Problem with Facebook you can't fix that its on there End

Please contact Facebook at the Help Center and Report the problem to them