I'm using FileMaker GO 12.07 on a iPad 3 and I can create pdfs to view or email with no problems.
I have found that when working on an iPad if you have a bunch of apps open, actions you take may not give the desired result. If closing apps don't solve the problem, I suggest you reload the App. I havent seen this problem.
I have Closed all the Apps running in the back ground and Deleted FileMaker Go.
Then I reinstalled Filemaker Go and viewing the PDF work Fine.
The Quality of the PDF seems to be Poor on a PC but fine on the iPad or a Mac. ???
Any Ideas ???
Poor can mean many things assuming you are talking about text. Take a look at which fonts you are using, size etc.