Fastlane - Unknown application in client if no en-US available in folder?

...albeit it has Fastlane metadata...but...it does not have en-US specifically but en-AU and others

ref: https://gitlab.com/gdroid/gdroidclient/-/tree/master/fastlane/metadata/android

But available on site: https://f-droid.org/en/packages/org.gdroid.gdroid/

IIRC I remember reading about this issue, but I can't find it now.

FYI @ar-