There is a problem with the encryption key(s) for "%1". Please re-select the key(s) which should be used for this recipient.
Der is swierrichheid mei de kaai( en) foar "% 1". Selektearje de kaai( en) dy' t brûkt wurde moat foar dizze ûntfanger. if in your language something like 'key( s)' isn' t possible please use the plural in the translation