Can't change vertical or horizontal

I scanned something to my PC and I opened with Adobe Acrobat Reader DC (I mean pdf format). My Acrobat Reader DC isn't full version. I just use for viewing somethings as usual but now I need to change something. I used my free trial version btw...

My file view is vertical and I want to change its view to horizantal. Do you get it? on view section I changed view (shift + ctrl + 0) and I cannot save because I don't buy full version. I can't keep this view and not working with "save as different" How should I keep this view when I reopen?

Do you understand guys? I need to send this file to someone.