At 6:00 UTC tomorrow (in about 6 hours) there will be an interruption of service to do some maintenance to a server rack.
This interruption should affect around 20% of the Mastodon servers hosted on Masto.host and is estimated that the downtime will be ~15 minutes.
You may follow the progress here: http://travaux.ovh.net/?do=details&id=46483
Sorry for the inconvenience.