User:BGerstle_(WMF) needs permissions to review changes and submit them for processing as part of syncing the iOS app translations.
I created new group transadmin with right translate-manage that should be able to use Special:ManageMessageGroups.
Great, thanks @Nikerabbit! Would you please ensure @Niedzielski is a member too?
He already has the ability to do this, but he should probably be in the new group you created.
I changed the groups for all of you: https://translatewiki.net/w/i.php?title=Special:ListUsers&group=transadmin
great, I'll re-open this if i have any issues