Hello, thank you for your feedback. I understand your concerns on the scrolling capture feature and I will be happy to help. Before you can use Scrolling Capture, you need to enable it in your Settings. Just open your Settings and tap Advanced features, then tap Smart capture to turn it on. Take a screenshot and when the screenshot tools trip appears at the bottom of your screen, tap the Scroll Capture icon — it looks like a box with two downward-pointing arrows inside it.
