I cannot tell you how to rotate a document, as I have never needed to do that. It is really the responsibility of the people who scan the documents to make sure that they are readable.
Since you don't tell us on what operating system you are, I cannot give you detailed advice on how to uninstall the latest version, then download and install the previous version.
P.S. it is not a good idea to publish your email address in a public forum; there are plenty of spiders around to harvest addresses for spammers. If you can edit your post and remove the address, please do so.
You can rotate the view of the document. Use View > Rotate View ... You can also add the buttons to the toolbar.
Bernd is correct, the view option is the feature to use here.
Always scan and look into the new toolbar of an upgraded version for features that are still there but named differently now.
The "'Help" section always is a good resouce. Good luck, perhaps you'll learn to love the new version as time goes on.