I've had exactly the same issue for the last 3-4 days when I try to play on my PC which is hardwired to the router.
I can login on my ipad though! Which is connected via wifi obviously.
This issue isnt at our end. Someone broke the PC version of this app.
I have reinstalled and that changed nothing. I have turned off my firewall and that didnt help either.
How do we raise this as an issue to be fixed?