I was referring to the weekly shutdown, but if you have set it up for daily shutdown, it's the same. Shutdown requires manually closing and opening the gateway. Zorro can reconnect automatically, you can even set BarMode to let it explicitly disconnect and re-connect, but it won't help. After a shutdown, the gateway is in a state that it does not accept API connections. Only closing it solves that.

I hope that this behavior changes with a new gateway version, but so far, all versions behave this way.