iPad Pro screen not rotating

Perhaps Screen Rotation is locked in the Control Centre?

Swipe-downwards with your finger from the top-right corner to expose the Control Centre - where you will find the Screen Rotation Lock button. Tap the button to set or unset the rotation lock:

App was downloaded on new iPadPro. A;; others work in landscape while this newer app comes up in portrait will will not rotate

My iPad updated to ios14 and now screen lock stays on. Iptessed rotate but no response

T would not rotate after pressing button. Tried many times. Please respond with answer. I’d rather have ios13 if this doesn’t work.