Gamipress – Buddyboss integration add-on plugin doesn’t translate

Hi there,
For my buddyboss integration add-on for Gamipress I’m trying to translate the string “%1$s earned the %2$s %3$s” via the plugin Loco Translate but without succes. I already came across this article: https://www.ads-software.com/support/topic/gamipress-translation/

However, eventhough I can find the string I’m trying to translate, it doesn’t translate when I’m trying to.

Can you help me?