I am sorry for my English.
I have several Sonoff.
After updating FW to 1.5.5. Sonoff will not connect to the AP Comfast CF-WR6000N or Comfast CF-WR302S or Mikrotik (TPLink TL-WR841N is OK).
With FW 1.5.2 connect OK.
This is the same for Sonoff TH16 and FW 2.0.4 not connect.
What with this?