The main feature of Uvallanne is the full support of all characters and diacritics of the Uralic Phonetic Alphabet. The automatic rendering of phonetic diacritics works only on applications, that are capable to interpret all typographical OpeType rules build into Uvallanne.
You will obtain support and advice only, if you are using OpenType aware applications Adobe's InDesign (and other CS applications), Redler's Mellel on Mac OS X, or Classical Text Editor on Windows.