I have been getting the same response for the first time I try to get on in the morning, and if I keep poking at it, it doesn't go away; but, if I leave it alone for a couple of hours, I can usually get on with no glitches. I think of it as similar to dumping a bunch of marbles in a funnel: they have to go through the narrow end one at a time, and it may be a slow process, but eventually, the marble that is "you" will get it's turn.

.