I noticed translations missing in the po file…

I noticed translations missing in the .po-file for subscribe2. How can I add this? It’s:
“Notification email (must not be empty):”
“Restrict the number of recipients per email to (0 for unlimited):”
“86400 seconds”
“Jetpack Weekly [Engl.]”
“Email”
“Date”
“items”
“Add more filles”

Kind regards,

Frank

#subscribe2, #untranslated

Why I get an untranslated value of…

Why I get an “untranslated” value of -12 in glotpressGlotPress GlotPress is the translation management software that powers Translate.WordPress.org. More information is available at glotpress.org. if I’ve imported the po from current tag??
How can I correct this?

#glotpress, #untranslated