I'm from Finland and when I joined Creative Cloud, I soon found out that Creative Cloud signing in doesn't work in Finnish even though it is possible to install some programmes in Finnish. So I uninstalled everything and installed all the programmes that I am using in English (International). No problem with that.
So I have also installed my Acrobat Pro XI in English and printing / exporting pdfs works fine as long as I am working within Adobe programmes (e.g. InDesign, PhotoShop, Illustrator). The programmes sometimes ask me to sign in but it works fine in English.
However, when I am trying to print or convert content in pdfs via webbrowsers or MS Office programmes (I have them in Finnish), I get a "Adobe Acrobat XI trial mode expired" window in Finnish 
and I am asked to sign in. When I try to sign in (via "Finnish window" which I cannot change in English at this phase), signing in (= Creative Cloud activation) fails, and the programme asks me to give the registration number. And that I don't have as I am using the programme via Creative Cloud!
I have uninstalled Acrobat Pro XI and installed it again and it did not have any effect.
Do you have any solution to this problem? It is very frustrating that printing pdfs succeeds in Adobe programmes only, it shouldn't work like that. (I am using Adobe programmes (installed locally "from the packadge", not via Createve Cloud) at work and printing pdfs works fine there.