The web-UI and Pictrs image host has been down for more than a week now, but the backend API for app use and federation was still working. But I have the feeling that sometimes during the last 24h that also went down, or at least I haven't seen a post relayed from them during that time.
I really don't know what's going on there, but at least initially someone said they ran out of storage on their server. But it seems odd that this takes more than a week to fix. Maybe the main admin is on holidays?