Hi Angelina,
Currently, the translation only works on the default terminology in the app/website and any custom text that planners are inputting will be in the language they enter it in, which would be the case for push notifications. What we have seen some other users do is to create duplicate notifications, one in each language and then create an audience segment for each language (ex: german and english) and then send out the appropriate push notifications via audience segment.
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Julia Plymack
Senior Client Success Manager
Cvent
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