Looks like you haven’t encountered the recent changes that came to the service. The company is going into complete blackout to revamp their existing service.
They have already stopped the service and DCs have been shutdown to prepare for the new update.
The reason your account is blocked is due to the to closure of the DCs.
Don’t worry, the service would come back again with something new and better.
So, I am afraid you have to wait. Till the service is back online.
Here’s the link: