At some point the welcome message to my site got un-pinned (human error). It wasn’t just unpinned for me, but unpinned for all users. I want to globally re-pin the welcome message (put it back to its default behaviour), but I’m finding that topics can only be globally pinned for a finite time period.
How can I put a Welcome message back to its default globally pinned state?
Or asked alternatively: is it correct that by topics can only be pinned for a finite amount of time?