I followed your youtube video on fullscreen and thumbnails view (https://www.youtube.com/watch?v=YcoJfaawnQI), however this is not quite working for me. I don't want a thumbnail view because it's too small on my page. My document is A4 and on fullscreen it's too large. The magnifier to reduce the size is greyed out.
On the settings i tried to reduce the page size from a4 to a5 but nothing happened. Your user manual is useless for any troubleshooting and I can't find any further info on your support forum.
How can I have full screen size for my pdf and view it neatly on the page without having to scroll down to view?