When I opened the iD, the edit screen takes too long to load. The openstreetmap.org load perfectly but the iD isn’t. Maybe my house’s network or the server is error. Anybody has some idea? 
Can you try zooming right in first?
Yesterday evening I got some timeouts when loading some (even small) areas from the server, which stores our data for editing with JOSM. I think, the server was very busy yesterday evening.
What do you mean by “screen”? The data loads too long or one of the imageries?