4X SONOFF S40TPB smart plugs turning off by self

More info:
All 4 devices turned off at same time, eWeLink detected status change and popped notifications on my phone, I turned them all back on, right away.

This is log from one of the devices (they all have the same record). Note that the device log doesn’t show any OFF commands, Only recorded when I turned them back on.

What can be causing 4 devices to turn off simultaneousy, uncommanded?
I entered the 4 device id’s in the ticket submitted to SONOFF. A ticket number was not provided in the automated reply from SONOFF. Waiting on further response to the ticket.