I need to be inside an app, activate the action, so it takes a screenshot, then scrolls, and then again the screenshot and so on.
I can do it manually, but it is too much content I need to back up.
I don’t mind if I have to purchase an app.
Thank you for your help.
Are you trying to stitch screenshots into a long image? If so, there are several apps that will do this. One I’ve used, to varying degrees of success, is Stitch & Share. I’ve not used it much in a few years, though, since Android has stitched screenshots built in now, so I’m not sure if it’s still a good option for that.