I have 3 Cretas
all 3 were down after updating Firmware to 3.211
Nr. 1 is online in s2s too and works as Wireguard-Server
but something ist strong:
In my home-net 92.168.9.x I can reach the admin panel http://192.168.9.17/#/login
a) with my Samsung S2 via Wlan 
b) not with Samsung ST8250 in the same WLAN 
c) not per SSH (putty) in the same LAN 
d) not per Browser Edge or Chrome in Windows PC in the same LAN 
what can I do?