Moon reader pro. Can't read a zoomed page

[cmgam]

Hi
When I zoom in on a page, obviously there is text that is off the screen. But, when I try to move the page to the right or left to see the text off the screen, the only action is that the previous or next page appears despite having set the page change with touches at the top and bottom of the screen.
In other words, I zoom but I can't read anything other than what's on the screen.
Thanks for any help
Regards