I cannot log in now

Is that cause new season is coming?
Unable to connect to battle.net for an hour!

I am playing with Switch, then what will happen about my characters?

Online characters are save on Blizzard servers. Offline are local.

I was playing early without any issues logging on. I did get disconnected once before season start. I figure that was due to Blizzard restarting their servers up to prepare for season statt.