I'm using Acrobat Reader DC and when I click on the rotate button to try to rotate a page I get a pop-up asking me to sign up for a 7 day trial. Are simple PDF manipulations such as rotating a page not allowed anymore. I know I am able to do that before.
Hope you are doing well and sorry for the trouble.
You can rotate the view of the PDF file using the freeware (Acrobat Reader DC) application. Open the PDF > Go View tab > Rotate View.
The option to change the orientation of the PDF is available with Acrobat DC paid application.
Hope this information will help
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