It’s a temporary glitch, the new servers are working, but the old one remains in “read-only” mode.
Our ISP’s DNS servers are possibly causing this, since their DNS records may be taking a long time to update. 
It’s a temporary glitch, the new servers are working, but the old one remains in “read-only” mode.
Our ISP’s DNS servers are possibly causing this, since their DNS records may be taking a long time to update. 