The demo site apparently resets at about 2am Berlin time and need to be re-indexed before it is usable again.
Thanks for adding the highly visible indicator that the index needs rebuilding. It think it will help admins of Gramps Web.
A question… can user-level-access visitors trigger a re-index if the alert appears? Or do they have to wait for an admin to notice?
However, could the script (that triggers the 2 am Gramps Web demo site reset) include a re-index?