I have had a black screen since Friday, 06 November.
I spoke to a PC user and they were having a similar issue, which started on the same date, so I doubt it's a Mac/PC thing.
If I highlight the screen with the cursor, I can see the word "Loading…" in the top left corner.
I have power-cycled the modem.
I have reinstalled the client.
Mac user.
Suggestions?