From the looks of what you shared, it seems you're using her growl as a standalone voicebank. Teto's voicebanks are meant to be put in one big folder, though it's highly unlikely that's the cause of your issue.
Let me ask, did you change your locale BEFORE installing UTAU and Teto's voicebanks? Also, do you have the wavtool and resampler set? Typically these things will also cause the issue of voicebanks not singing.
Finally, for the suffix... are you copying it from Teto's website or typing it? If you're typing it, are you typing "chikara" in order to get the kanji used for the suffix? It looks to me like you may be using the katakana "ka" (カ) as opposed to the kanji for "chikara" which is "力".