If you didn't mark a symbol on your Rocketbook page, you'll be prompted to select a destination after scanning. Just scan your pages, hit next, select your destinations, and send away!
If you exit the scan page before sending, your pages will be saved as previews. To view them, tap New Scan when you open your app and you'll see them at the bottom of your page. From there, you can rotate your scans, send them to Unsupported Destinations, or send us Scan Feedback if you're having trouble.