Can't load messages

[Former user]

The messages/conversations won't load, I tried on Safari, on Chrome, on Firefox even, but it's always the same, "loading". I restarted my computer too, just in case, but came back to the same result. Even when I was writing into a conversation I haven't seen anything, not what I typed, nor what I received (which I did, because I saw the person typing), and later I had messages indicated with red, just won't load.