I upgraded my LE from 8.2.5 to 9.0.0. No problem at the reboot.
I'm connected trough Wifi. The status of the connection is good (DHCP, IP given, online, etc...) but I have bad date and time. So, all SSL connections fail.
It seems that the first connection to NTP server fails and I don't know why. With LAN, there is no problem.
And before the upgrade, with version 8.2.5, there was no problem.
I'm on raspberry PI3 B+.
Someone could help me?