i just upgraded (manually, the other option didn’t work) to last 1.8.2, and before that i followed hints i found in How to - Analytics Platform - Matomo, putting
record_statistics = 0
maintenance_mode = 1
in the config/config.ini.php file.
but i didn’t notice any difference in piwik web interface, i could still connect to it no message was shown. I went on anyway, and everything worked, apparently.
but, how is it supposed to work? where the “maintenance” message shoud appear?