Tried to watch some stuff on Disney+ this morning and not a single movie would start, did manage to start a few TV episodes, Kim Possible and Phineas And Ferb. Couldn't even get into the lists for some of the movie franchises.
And the error messages are very telling, they all are blaming the user, saying your internet is too slow so check it and try again, as if there was no possibility that the Disney+ servers were the problem....
Seems like they were not prepared for the volume, this was 8am eastern so if they don't get more capacity during the day this evening it's going to be fully crashed...
So I'd say if you are going to start your 7 day free trial probably best to wait at least a few days, hopefully they will have it working by the weekend, I really want to see what the Star Wars movies look like in 4K HDR...