Activity Stream displaying email subject in English despite French translated notifications

[gdo]

Hi everyone,

My client wants a fully French Workspace experience. We've managed to translate almost everything, but we're stuck on one specific point: the Activity Stream.

When an email is received, it appears in the activity stream with the original English subject line (e.g. "Incident has been ..", instead of the french translated email) 

The email itself is sent and received in French ✅

The notification was translated using the Translated Notifications related list ✅ — see screenshot #2.

But the subject line displayed in the activity stream still shows in English (original object name).

My client does not want to pay for a Dynamic Translation licence.

Aside from changing the subject in the original email template, what options do I have to get this displayed in French in the activity stream?

Thanks in advance for any advice! 🙏